Has-Mor is a leading manufacturer of encapsulated O-rings.  Their main product offering is FEP Encapsulated O-rings.  FEP stands for fluorinated ethylene propylene.  FEP encapsulated O-rings consist of a rubber-elastic O-ring with FEP encapsulation, which encases the O-ring without seams.  Fluorocarbon rubber, silicone rubber, EPDM and Viton are used as core materials.

In addition to FEP, Has-Mor offers PFA encapsulated O-rings.  PFA (perfluoroalkoxy) fluorocarbon resin also encases the O-ring material of fluorocarbon rubber, silicone rubber, EPDM and Viton without seams.

HAS-MOR IS A DOW™ APPROVED SUPPLIER OF ELASTOMER BASED MATERIAL.

A standard part number identifies each O-ring size. These part numbers indicate diameter and cross section dimensions of the O-ring.  Complete listings of standard sizes are available by contacting McReps, Inc. or Has-Mor direct.

Encapsulated “square-cut” rings as well as custom encapsulation such as, encapsulation of springs is available.

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