*Offer valid 12/26/16-12/30/16 while supplies last at participating Hallmark Gold Crown stores in the U.S.A. and at Hallmark.com. Discount will be taken on equal or lesser-valued item. Not valid on past purchases. Hallmark.com orders require U.S. billing and shipping addresses.
Depending on the application and the designof the seal, the material used may be nitrile, polyacrylate, fluoroelastomer(Viton), silicone, nylon or TeflonÂ¨. Nitrile is one of theleast expensive materials, and has been used for many years inumbrella or deflector type seals for older pushrod engines.
Elastomeric Compounds Seal & Design offers a wide range of rubber compounds also know as elastomers. These compounds are typically used for o-rings but gaskets can also be fabricated from elastomeric sheet material. Elastomers consist of both synthetic and natural materials, and are formulated to have a wide array of physical properties. Different compounds are better suited for a variety of applications, depending primarily on the compoundâs exposure to fluids, heat, and pressure.