Round O-Ring, ID 40mm, WD 5mm, OD 50mm, 72 O-Rings, 72PK X1 Round O-Rings are used to block a path which may otherwise allow a liquid or a gas to escape.
.Round O-Ring, ID 45mm, WD 6mm, OD 57mm, 20 O-Rings, 20PK X1 Round O-Rings are used to block a path which may otherwise allow a liquid or a gas to escape.