Gasket and rubber gasket manufacturers including die cut gaskets, silicone gaskets, neoprene gaskets, automotive gaskets, and high temperature gaskets.  

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Rubber Gasket Terms

Anti-extrusion Rings – Also referred to as “back-up rings,” they are rings designed to fit behind rubber o-ring seals in order to prevent extrusion into the gap between the metal pieces.
 
Beryllium Copper – A lightweight metal that resists corrosion and is used in aerospace materials, springs and gaskets.
 
Blowout Pressure – The internal forces that exert pressure against a gasket, which may cause the unsealing of the gasketed joint.
 
Bonded Seals – Flat steel washers in the center of which a rubber sealing ring is molded to fit over a bolt, providing a seal.
 
Die Cutting (http://www.diecutting.net) – Cutting shapes out of material using a die. The die is a pre-formed stencil.
 
Electromagnetic Interference – An interruption produced by an electric current, which can be filtered out by some gaskets.
 
Flange Load – The total force that creates a seal through compression of the gasket.
 
Hydrostatic End Force – The internal forces working against the flanges holding the gasket in place.
 
Mismatch – The unevenness of a seal due to differences in the two adjoining surfaces.
 
Nebar – A specialized gasket material that is used in electrical transformers.
 
Neoprene – A rubber used in weather resistant products, adhesives, paints, rocket fuel and gaskets.
 
Parback – A back-up ring that is used as an anti-extrusion ring for an o-ring. Parbacks are concave-shaped on one side.
 
Rings – Circular sealing devices.

Seal Strips – Strips comprised of multiple layers of metal that are welded together to allow gaskets to be used in extreme heat or pressure.

Slip O-ring – A type of ring that relieves friction by fitting over an o-ring.

Shims – Used as spacers between a gasket and the adjoining material.

Static Seal – A seal, created by a gasket, between two unmoving parts.

Washers – Flat, circular rings placed under the head of a bolt to serve as spacers, gaskets or slip devices.