<?xml version="1.0" encoding="US-ASCII" standalone="no"?>
    <!-- Field: Doc-Info; Name: Generator; Value: GoFiler Complete; Version: 6.4b -->
    <!-- Field: Doc-Info; Name: VendorURI; Value: https://www.novaworks.com -->
    <!-- Field: Doc-Info; Name: Status; Value: 0x00000000 -->
<link:linkbase xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xbrli="http://www.xbrl.org/2003/instance" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
    <link:roleRef xlink:type="simple" xlink:href="oflx-20251231.xsd#Cover" roleURI="http://omegaflex.com/role/Cover" />
    <link:roleRef xlink:type="simple" xlink:href="oflx-20251231.xsd#StatementsOfNetAssetsAvailableForBenefits" roleURI="http://omegaflex.com/role/StatementsOfNetAssetsAvailableForBenefits" />
    <link:roleRef xlink:type="simple" xlink:href="oflx-20251231.xsd#StatementsOfChangesInNetAssetsAvailableForBenefits" roleURI="http://omegaflex.com/role/StatementsOfChangesInNetAssetsAvailableForBenefits" />
    <link:roleRef xlink:type="simple" xlink:href="oflx-20251231.xsd#PlanDescription" roleURI="http://omegaflex.com/role/PlanDescription" />
    <link:roleRef xlink:type="simple" xlink:href="oflx-20251231.xsd#SummaryOfSignificantAccountingPolicies" roleURI="http://omegaflex.com/role/SummaryOfSignificantAccountingPolicies" />
    <link:roleRef xlink:type="simple" xlink:href="oflx-20251231.xsd#InvestmentsAndFairValueMeasurements" roleURI="http://omegaflex.com/role/InvestmentsAndFairValueMeasurements" />
    <link:roleRef xlink:type="simple" xlink:href="oflx-20251231.xsd#OmegaFlexInc.StockFund" roleURI="http://omegaflex.com/role/OmegaFlexInc.StockFund" />
    <link:roleRef xlink:type="simple" xlink:href="oflx-20251231.xsd#RelatedPartyTransactions" roleURI="http://omegaflex.com/role/RelatedPartyTransactions" />
    <link:roleRef xlink:type="simple" xlink:href="oflx-20251231.xsd#PlanTermination" roleURI="http://omegaflex.com/role/PlanTermination" />
    <link:roleRef xlink:type="simple" xlink:href="oflx-20251231.xsd#TaxStatusOfPlan" roleURI="http://omegaflex.com/role/TaxStatusOfPlan" />
    <link:roleRef xlink:type="simple" xlink:href="oflx-20251231.xsd#ExcessContributionsPayable" roleURI="http://omegaflex.com/role/ExcessContributionsPayable" />
    <link:roleRef xlink:type="simple" xlink:href="oflx-20251231.xsd#ReconciliationOfFinancialStatementsToForm5500" roleURI="http://omegaflex.com/role/ReconciliationOfFinancialStatementsToForm5500" />
    <link:roleRef xlink:type="simple" xlink:href="oflx-20251231.xsd#SubsequentEvents" roleURI="http://omegaflex.com/role/SubsequentEvents" />
    <link:roleRef xlink:type="simple" xlink:href="oflx-20251231.xsd#ScheduleHLine4iScheduleOfAssetsHeldAtEndOfYear" roleURI="http://omegaflex.com/role/ScheduleHLine4iScheduleOfAssetsHeldAtEndOfYear" />
    <link:roleRef xlink:type="simple" xlink:href="oflx-20251231.xsd#SummaryOfSignificantAccountingPoliciesPolicies" roleURI="http://omegaflex.com/role/SummaryOfSignificantAccountingPoliciesPolicies" />
    <link:roleRef xlink:type="simple" xlink:href="oflx-20251231.xsd#PlanDescriptionTables" roleURI="http://omegaflex.com/role/PlanDescriptionTables" />
    <link:roleRef xlink:type="simple" xlink:href="oflx-20251231.xsd#InvestmentsAndFairValueMeasurementsTables" roleURI="http://omegaflex.com/role/InvestmentsAndFairValueMeasurementsTables" />
    <link:roleRef xlink:type="simple" xlink:href="oflx-20251231.xsd#ReconciliationOfFinancialStatementsToForm5500Tables" roleURI="http://omegaflex.com/role/ReconciliationOfFinancialStatementsToForm5500Tables" />
    <link:roleRef xlink:type="simple" xlink:href="oflx-20251231.xsd#ScheduleHLine4iScheduleOfAssetsHeldAtEndOfYearTables" roleURI="http://omegaflex.com/role/ScheduleHLine4iScheduleOfAssetsHeldAtEndOfYearTables" />
    <link:roleRef xlink:type="simple" xlink:href="oflx-20251231.xsd#PlanDescriptionDetailsNarrative" roleURI="http://omegaflex.com/role/PlanDescriptionDetailsNarrative" />
    <link:roleRef xlink:type="simple" xlink:href="oflx-20251231.xsd#ScheduleOfVestingPercentageOnParticipantContributionsDetails" roleURI="http://omegaflex.com/role/ScheduleOfVestingPercentageOnParticipantContributionsDetails" />
    <link:roleRef xlink:type="simple" xlink:href="oflx-20251231.xsd#SummaryOfSignificantAccountingPoliciesDetailsNarrative" roleURI="http://omegaflex.com/role/SummaryOfSignificantAccountingPoliciesDetailsNarrative" />
    <link:roleRef xlink:type="simple" xlink:href="oflx-20251231.xsd#ScheduleOfPlanAssetsAtFairValueDetails" roleURI="http://omegaflex.com/role/ScheduleOfPlanAssetsAtFairValueDetails" />
    <link:roleRef xlink:type="simple" xlink:href="oflx-20251231.xsd#ScheduleOfFairValueEstimatedUsingNavPerShareDetails" roleURI="http://omegaflex.com/role/ScheduleOfFairValueEstimatedUsingNavPerShareDetails" />
    <link:roleRef xlink:type="simple" xlink:href="oflx-20251231.xsd#OmegaFlexInc.StockFundDetailsNarrative" roleURI="http://omegaflex.com/role/OmegaFlexInc.StockFundDetailsNarrative" />
    <link:roleRef xlink:type="simple" xlink:href="oflx-20251231.xsd#RelatedPartyTransactionsDetailsNarrative" roleURI="http://omegaflex.com/role/RelatedPartyTransactionsDetailsNarrative" />
    <link:roleRef xlink:type="simple" xlink:href="oflx-20251231.xsd#ExcessContributionsPayableDetailsNarrative" roleURI="http://omegaflex.com/role/ExcessContributionsPayableDetailsNarrative" />
    <link:roleRef xlink:type="simple" xlink:href="oflx-20251231.xsd#ScheduleOfFinancialStatementsToForm5500Details" roleURI="http://omegaflex.com/role/ScheduleOfFinancialStatementsToForm5500Details" />
    <link:roleRef xlink:type="simple" xlink:href="oflx-20251231.xsd#ScheduleOfReconciliationOfNetIncreaseInNetAssetsDetails" roleURI="http://omegaflex.com/role/ScheduleOfReconciliationOfNetIncreaseInNetAssetsDetails" />
    <link:roleRef xlink:type="simple" xlink:href="oflx-20251231.xsd#ScheduleOfAssetHeldForInvestmentDetails" roleURI="http://omegaflex.com/role/ScheduleOfAssetHeldForInvestmentDetails" />
    <link:calculationLink xlink:type="extended" xlink:role="http://omegaflex.com/role/Cover" xlink:title="00000001 - Document - Cover" />
    <link:calculationLink xlink:type="extended" xlink:role="http://omegaflex.com/role/StatementsOfNetAssetsAvailableForBenefits" xlink:title="00000002 - Statement - Statements of Net Assets Available for Benefits">
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanReceivable" xlink:label="loc_us-gaap-ebpEmployeeBenefitPlanReceivable" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanInvestmentIncomeReceivable" xlink:label="loc_us-gaap-ebpEmployeeBenefitPlanInvestmentIncomeReceivable" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap-ebpEmployeeBenefitPlanReceivable" xlink:to="loc_us-gaap-ebpEmployeeBenefitPlanInvestmentIncomeReceivable" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanEmployerContributionReceivable" xlink:label="loc_us-gaap-ebpEmployeeBenefitPlanEmployerContributionReceivable" />
      <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap-ebpEmployeeBenefitPlanReceivable" xlink:to="loc_us-gaap-ebpEmployeeBenefitPlanEmployerContributionReceivable" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanParticipantContributionReceivable" xlink:label="loc_us-gaap-ebpEmployeeBenefitPlanParticipantContributionReceivable" />
      <link:calculationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap-ebpEmployeeBenefitPlanReceivable" xlink:to="loc_us-gaap-ebpEmployeeBenefitPlanParticipantContributionReceivable" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanNoteReceivableFromParticipant" xlink:label="loc_us-gaap-ebpEmployeeBenefitPlanNoteReceivableFromParticipant" />
      <link:calculationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap-ebpEmployeeBenefitPlanReceivable" xlink:to="loc_us-gaap-ebpEmployeeBenefitPlanNoteReceivableFromParticipant" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanAsset" xlink:label="loc_us-gaap-ebpEmployeeBenefitPlanAsset" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanInvestmentExcludingPlanInterestInMasterTrustFairValue" xlink:label="loc_us-gaap-ebpEmployeeBenefitPlanInvestmentExcludingPlanInterestInMasterTrustFairValue" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap-ebpEmployeeBenefitPlanAsset" xlink:to="loc_us-gaap-ebpEmployeeBenefitPlanInvestmentExcludingPlanInterestInMasterTrustFairValue" xlink:type="arc" weight="1" />
      <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap-ebpEmployeeBenefitPlanAsset" xlink:to="loc_us-gaap-ebpEmployeeBenefitPlanReceivable" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanLiability" xlink:label="loc_us-gaap-ebpEmployeeBenefitPlanLiability" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanExcessContributionPayable" xlink:label="loc_us-gaap-ebpEmployeeBenefitPlanExcessContributionPayable" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap-ebpEmployeeBenefitPlanLiability" xlink:to="loc_us-gaap-ebpEmployeeBenefitPlanExcessContributionPayable" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanNetAssetAvailableForBenefit" xlink:label="loc_us-gaap-ebpEmployeeBenefitPlanNetAssetAvailableForBenefit" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap-ebpEmployeeBenefitPlanNetAssetAvailableForBenefit" xlink:to="loc_us-gaap-ebpEmployeeBenefitPlanAsset" xlink:type="arc" weight="1" />
      <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap-ebpEmployeeBenefitPlanNetAssetAvailableForBenefit" xlink:to="loc_us-gaap-ebpEmployeeBenefitPlanLiability" xlink:type="arc" weight="-1" />
    </link:calculationLink>
    <link:calculationLink xlink:type="extended" xlink:role="http://omegaflex.com/role/StatementsOfChangesInNetAssetsAvailableForBenefits" xlink:title="00000003 - Statement - Statements of Changes in Net Assets Available for Benefits">
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncreaseDecreaseForIncomeLossOnInvestment" xlink:label="loc_us-gaap-ebpEmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncreaseDecreaseForIncomeLossOnInvestment" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncreaseDecreaseForGainLossOnInvestment" xlink:label="loc_us-gaap-ebpEmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncreaseDecreaseForGainLossOnInvestment" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap-ebpEmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncreaseDecreaseForIncomeLossOnInvestment" xlink:to="loc_us-gaap-ebpEmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncreaseDecreaseForGainLossOnInvestment" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncreaseForInterestAndDividendIncomeOnInvestment" xlink:label="loc_us-gaap-ebpEmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncreaseForInterestAndDividendIncomeOnInvestment" />
      <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap-ebpEmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncreaseDecreaseForIncomeLossOnInvestment" xlink:to="loc_us-gaap-ebpEmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncreaseForInterestAndDividendIncomeOnInvestment" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncreaseForContribution" xlink:label="loc_us-gaap-ebpEmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncreaseForContribution" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncreaseForEmployerContribution" xlink:label="loc_us-gaap-ebpEmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncreaseForEmployerContribution" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap-ebpEmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncreaseForContribution" xlink:to="loc_us-gaap-ebpEmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncreaseForEmployerContribution" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncreaseForParticipantContributionExcludingRollover" xlink:label="loc_us-gaap-ebpEmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncreaseForParticipantContributionExcludingRollover" />
      <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap-ebpEmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncreaseForContribution" xlink:to="loc_us-gaap-ebpEmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncreaseForParticipantContributionExcludingRollover" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncrease" xlink:label="loc_us-gaap-ebpEmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncrease" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap-ebpEmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncrease" xlink:to="loc_us-gaap-ebpEmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncreaseDecreaseForIncomeLossOnInvestment" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncreaseForInterestIncomeOnNoteReceivableFromParticipant" xlink:label="loc_us-gaap-ebpEmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncreaseForInterestIncomeOnNoteReceivableFromParticipant" />
      <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap-ebpEmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncrease" xlink:to="loc_us-gaap-ebpEmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncreaseForInterestIncomeOnNoteReceivableFromParticipant" xlink:type="arc" weight="1" />
      <link:calculationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap-ebpEmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncrease" xlink:to="loc_us-gaap-ebpEmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncreaseForContribution" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitDecrease" xlink:label="loc_us-gaap-ebpEmployeeBenefitPlanChangeInNetAssetAvailableForBenefitDecrease" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitDecreaseForPaymentToParticipant" xlink:label="loc_us-gaap-ebpEmployeeBenefitPlanChangeInNetAssetAvailableForBenefitDecreaseForPaymentToParticipant" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap-ebpEmployeeBenefitPlanChangeInNetAssetAvailableForBenefitDecrease" xlink:to="loc_us-gaap-ebpEmployeeBenefitPlanChangeInNetAssetAvailableForBenefitDecreaseForPaymentToParticipant" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitDecreaseForAdministrativeExpense" xlink:label="loc_us-gaap-ebpEmployeeBenefitPlanChangeInNetAssetAvailableForBenefitDecreaseForAdministrativeExpense" />
      <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap-ebpEmployeeBenefitPlanChangeInNetAssetAvailableForBenefitDecrease" xlink:to="loc_us-gaap-ebpEmployeeBenefitPlanChangeInNetAssetAvailableForBenefitDecreaseForAdministrativeExpense" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncreaseDecrease" xlink:label="loc_us-gaap-ebpEmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncreaseDecrease" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap-ebpEmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncreaseDecrease" xlink:to="loc_us-gaap-ebpEmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncrease" xlink:type="arc" weight="1" />
      <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap-ebpEmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncreaseDecrease" xlink:to="loc_us-gaap-ebpEmployeeBenefitPlanChangeInNetAssetAvailableForBenefitDecrease" xlink:type="arc" weight="-1" />
    </link:calculationLink>
    <link:calculationLink xlink:type="extended" xlink:role="http://omegaflex.com/role/PlanDescription" xlink:title="999004 - Disclosure - Plan Description" />
    <link:calculationLink xlink:type="extended" xlink:role="http://omegaflex.com/role/SummaryOfSignificantAccountingPolicies" xlink:title="999005 - Disclosure - Summary of Significant Accounting Policies" />
    <link:calculationLink xlink:type="extended" xlink:role="http://omegaflex.com/role/InvestmentsAndFairValueMeasurements" xlink:title="999006 - Disclosure - Investments and Fair Value Measurements" />
    <link:calculationLink xlink:type="extended" xlink:role="http://omegaflex.com/role/OmegaFlexInc.StockFund" xlink:title="999007 - Disclosure - Omega Flex, Inc. Stock Fund" />
    <link:calculationLink xlink:type="extended" xlink:role="http://omegaflex.com/role/RelatedPartyTransactions" xlink:title="999008 - Disclosure - Related Party Transactions" />
    <link:calculationLink xlink:type="extended" xlink:role="http://omegaflex.com/role/PlanTermination" xlink:title="999009 - Disclosure - Plan Termination" />
    <link:calculationLink xlink:type="extended" xlink:role="http://omegaflex.com/role/TaxStatusOfPlan" xlink:title="999010 - Disclosure - Tax Status of the Plan" />
    <link:calculationLink xlink:type="extended" xlink:role="http://omegaflex.com/role/ExcessContributionsPayable" xlink:title="999011 - Disclosure - Excess Contributions Payable" />
    <link:calculationLink xlink:type="extended" xlink:role="http://omegaflex.com/role/ReconciliationOfFinancialStatementsToForm5500" xlink:title="999012 - Disclosure - Reconciliation of Financial Statements to Form 5500" />
    <link:calculationLink xlink:type="extended" xlink:role="http://omegaflex.com/role/SubsequentEvents" xlink:title="999013 - Disclosure - Subsequent Events" />
    <link:calculationLink xlink:type="extended" xlink:role="http://omegaflex.com/role/ScheduleHLine4iScheduleOfAssetsHeldAtEndOfYear" xlink:title="999014 - Disclosure - Schedule H, Line 4(i) &#8211; Schedule of Assets (Held at End of Year)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://omegaflex.com/role/SummaryOfSignificantAccountingPoliciesPolicies" xlink:title="999015 - Disclosure - Summary of Significant Accounting Policies (Policies)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://omegaflex.com/role/PlanDescriptionTables" xlink:title="999016 - Disclosure - Plan Description (Tables)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://omegaflex.com/role/InvestmentsAndFairValueMeasurementsTables" xlink:title="999017 - Disclosure - Investments and Fair Value Measurements (Tables)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://omegaflex.com/role/ReconciliationOfFinancialStatementsToForm5500Tables" xlink:title="999018 - Disclosure - Reconciliation of Financial Statements to Form 5500 (Tables)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://omegaflex.com/role/ScheduleHLine4iScheduleOfAssetsHeldAtEndOfYearTables" xlink:title="999019 - Disclosure - Schedule H, Line 4(i) &#8211; Schedule of Assets (Held at End of Year) (Tables)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://omegaflex.com/role/PlanDescriptionDetailsNarrative" xlink:title="999020 - Disclosure - Plan Description (Details Narrative)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://omegaflex.com/role/ScheduleOfVestingPercentageOnParticipantContributionsDetails" xlink:title="999021 - Disclosure - Schedule of Vesting Percentage on Participant Contributions (Details)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://omegaflex.com/role/SummaryOfSignificantAccountingPoliciesDetailsNarrative" xlink:title="999022 - Disclosure - Summary of Significant Accounting Policies (Details Narrative)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://omegaflex.com/role/ScheduleOfPlanAssetsAtFairValueDetails" xlink:title="999023 - Disclosure - Schedule of Plan Assets at Fair Value (Details)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://omegaflex.com/role/ScheduleOfFairValueEstimatedUsingNavPerShareDetails" xlink:title="999024 - Disclosure - Schedule of Fair Value Estimated Using NAV Per Share (Details)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://omegaflex.com/role/OmegaFlexInc.StockFundDetailsNarrative" xlink:title="999025 - Disclosure - Omega Flex, Inc. Stock Fund (Details Narrative)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://omegaflex.com/role/RelatedPartyTransactionsDetailsNarrative" xlink:title="999026 - Disclosure - Related Party Transactions (Details Narrative)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://omegaflex.com/role/ExcessContributionsPayableDetailsNarrative" xlink:title="999027 - Disclosure - Excess Contributions Payable (Details Narrative)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://omegaflex.com/role/ScheduleOfFinancialStatementsToForm5500Details" xlink:title="999028 - Disclosure - Schedule of Financial Statements to Form 5500 (Details)">
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanForm5500CaptionNetAssetAvailableForBenefit" xlink:label="loc_us-gaap-ebpEmployeeBenefitPlanForm5500CaptionNetAssetAvailableForBenefit" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanNetAssetAvailableForBenefit" xlink:label="loc_us-gaap-ebpEmployeeBenefitPlanNetAssetAvailableForBenefit" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap-ebpEmployeeBenefitPlanForm5500CaptionNetAssetAvailableForBenefit" xlink:to="loc_us-gaap-ebpEmployeeBenefitPlanNetAssetAvailableForBenefit" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="oflx-20251231.xsd#OFLX_EmployeeBenefitPlanForm5500CaptionReceivableEmployerContributions" xlink:label="loc_OFLXEmployeeBenefitPlanForm5500CaptionReceivableEmployerContributions" />
      <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap-ebpEmployeeBenefitPlanForm5500CaptionNetAssetAvailableForBenefit" xlink:to="loc_OFLXEmployeeBenefitPlanForm5500CaptionReceivableEmployerContributions" xlink:type="arc" weight="-1" />
      <link:loc xlink:type="locator" xlink:href="oflx-20251231.xsd#OFLX_TotalExcessContributionsPayable" xlink:label="loc_OFLXTotalExcessContributionsPayable" />
      <link:calculationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap-ebpEmployeeBenefitPlanForm5500CaptionNetAssetAvailableForBenefit" xlink:to="loc_OFLXTotalExcessContributionsPayable" xlink:type="arc" weight="-1" />
    </link:calculationLink>
    <link:calculationLink xlink:type="extended" xlink:role="http://omegaflex.com/role/ScheduleOfReconciliationOfNetIncreaseInNetAssetsDetails" xlink:title="999029 - Disclosure - Schedule of Reconciliation of Net Increase in Net Assets (Details)">
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanForm5500CaptionNetIncomeLoss" xlink:label="loc_us-gaap-ebpEmployeeBenefitPlanForm5500CaptionNetIncomeLoss" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncreaseDecrease" xlink:label="loc_us-gaap-ebpEmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncreaseDecrease" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap-ebpEmployeeBenefitPlanForm5500CaptionNetIncomeLoss" xlink:to="loc_us-gaap-ebpEmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncreaseDecrease" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanForm5500CaptionEmployerContribution" xlink:label="loc_us-gaap-ebpEmployeeBenefitPlanForm5500CaptionEmployerContribution" />
      <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap-ebpEmployeeBenefitPlanForm5500CaptionNetIncomeLoss" xlink:to="loc_us-gaap-ebpEmployeeBenefitPlanForm5500CaptionEmployerContribution" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="oflx-20251231.xsd#OFLX_EmployeeBenefitPlanForm5500CaptionExcessrContributionPayable" xlink:label="loc_OFLXEmployeeBenefitPlanForm5500CaptionExcessrContributionPayable" />
      <link:calculationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap-ebpEmployeeBenefitPlanForm5500CaptionNetIncomeLoss" xlink:to="loc_OFLXEmployeeBenefitPlanForm5500CaptionExcessrContributionPayable" xlink:type="arc" weight="-1" />
    </link:calculationLink>
    <link:calculationLink xlink:type="extended" xlink:role="http://omegaflex.com/role/ScheduleOfAssetHeldForInvestmentDetails" xlink:title="999030 - Disclosure - Schedule of Asset Held for Investment (Details)" />
</link:linkbase>
