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This Sea & Sea o-ring Set is for the Sea & Sea compact macro port. The o-ring goes in between the compact macro port and compact macro port base. 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.
UPC: 752221562903