3″ x 3-3/8″ x 3/16″ Large Rubber O-Rings (2 pcs.)
Diameter: 3″ Diameter 2: 3-3/8″ Length: 3-3/8″ Thickness: 3/16″ Material: Rubber Type: O-Ring Box of 2. An O-ring is a mechanical gasket in the shape of a torus; it is a loop of elastomer with a disc-shaped cross-section, designed to be seated in a groove and compressed during assembly between two or more parts, creating a seal at the interface.