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<?xml version="1.0" encoding="windows-1252"?> |
<ownershipDocument> |
| <schemaVersion> X0306 </schemaVersion> |
| <documentType> 5 </documentType> |
| <periodOfReport> 2014-12-31 </periodOfReport> |
| <notSubjectToSection16> 0 </notSubjectToSection16> |
| <form3HoldingsReported> 0 </form3HoldingsReported> |
| <form4TransactionsReported> 0 </form4TransactionsReported> |
| <issuer> |
| | <issuerCik> 0000096943 </issuerCik> |
| | <issuerName> TELEFLEX INC </issuerName> |
| | <issuerTradingSymbol> TFX </issuerTradingSymbol> |
| | </issuer> |
| <reportingOwner> |
| | <reportingOwnerId> |
| | | <rptOwnerCik> 0001289464 </rptOwnerCik> |
| | | <rptOwnerName> Leyden James J </rptOwnerName> |
| | | </reportingOwnerId> |
| | <reportingOwnerAddress> |
| | | <rptOwnerStreet1> 550 E. SWEDESFORD ROAD </rptOwnerStreet1> |
| | | <rptOwnerStreet2> SUITE 400 </rptOwnerStreet2> |
| | | <rptOwnerCity> WAYNE </rptOwnerCity> |
| | | <rptOwnerState> PA </rptOwnerState> |
| | | <rptOwnerZipCode> 19087 </rptOwnerZipCode> |
| | | <rptOwnerStateDescription></rptOwnerStateDescription> |
| | | </reportingOwnerAddress> |
| | <reportingOwnerRelationship> |
| | | <isDirector> 0 </isDirector> |
| | | <isOfficer> 1 </isOfficer> |
| | | <isTenPercentOwner> 0 </isTenPercentOwner> |
| | | <isOther> 0 </isOther> |
| | | <officerTitle> VP, General Counsel, Secretary </officerTitle> |
| | | <otherText></otherText> |
| | | </reportingOwnerRelationship> |
| | </reportingOwner> |
| <nonDerivativeTable> |
| | <nonDerivativeTransaction> |
| | | <securityTitle> |
| <value> Common Stock </value> |
| </securityTitle> |
| | | <transactionDate> |
| <value> 2014-12-31 </value> |
| </transactionDate> |
| | | <transactionCoding> |
| <transactionFormType> 5 </transactionFormType> |
| <transactionCode> A </transactionCode> |
| <equitySwapInvolved> 0 </equitySwapInvolved> |
| </transactionCoding> |
| | | <transactionAmounts> |
| <transactionShares> |
| <value> 4.7211 </value> |
| </transactionShares> |
| <transactionPricePerShare> |
| <footnoteId id="F1"/> |
| </transactionPricePerShare> |
| <transactionAcquiredDisposedCode> |
| <value> A </value> |
| </transactionAcquiredDisposedCode> |
| </transactionAmounts> |
| | | <postTransactionAmounts> |
| <sharesOwnedFollowingTransaction> |
| <value> 1411.4807 </value> |
| </sharesOwnedFollowingTransaction> |
| </postTransactionAmounts> |
| | | <ownershipNature> |
| <directOrIndirectOwnership> |
| <value> I </value> |
| </directOrIndirectOwnership> |
| <natureOfOwnership> |
| <value> By 401(k) Trustee </value> |
| </natureOfOwnership> |
| </ownershipNature> |
| | | </nonDerivativeTransaction> |
| | </nonDerivativeTable> |
| <derivativeTable></derivativeTable> |
| <footnotes> |
| | <footnote id="F1"> Total number of shares of Common Stock held by Reporting Person indirectly by the 401(K) Trustee is based on a plan statement dated as of December 31, 2014. </footnote> |
| | </footnotes> |
| <remarks></remarks> |
| <ownerSignature> |
| | <signatureName> Daniel V. Logue with POA for James J. Leyden </signatureName> |
| | <signatureDate> 2015-01-30 </signatureDate> |
| | </ownerSignature> |
| </ownershipDocument> |