2-3/4″ x 3″ x 1/8″ Medium Rubber O-Rings (4 pcs.)
Diameter: 2-3/4″ Diameter 2: 3″ Length: 3″ Thickness: 1/8″ Material: Rubber Type: O-Ring Box of 4. 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.