O-ring
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An O-ring, also known as a packing or a toric joint, is a mechanical gasket in the shape of a torus; it is a loop of elastomer with a round cross-section, designed to be seated in a groove and compres
Some small O-rings
EPDM rubber
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EPDM rubber is a type of synthetic rubber that is used in many applications.
An EPDM rubber roof
A roll of EPDM flashing with fleece on the back, used for waterproofing roofs