2-7/8" x 3-1/4" x 3/16" Large Rubber O-Rings

Diameter: 2-7/8"
Diameter 2: 3-1/4"
Length: 3-1/4"
Thickness: 3/16"
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.