This Olympus POL-037B O-Ring is for the rear lid of the underwater housing PT-037. This housing is for the Olympus SP-550 UZ digital Camera. The o-ring, resembling a thick rubber band, is designed to establish a watertight seal when going underwater.
Manufactured to precision tolerances required to hold a pressure seal on your housing and made of elastomeric material, it provides the means by which a watertight seal is formed.
O-Ring care guide