AOI O-ring for Lens Port with AX Mount (POR-03)

A precision silicone spare seal for AOI's AX-mount lens ports, the POR-03 keeps the port-to-housing connection watertight as the original O-ring wears from repeated dives and cleaning. Keeping a spare on hand means you're never stuck topside because of a nicked or aged seal.

Sold individually, it's cheap insurance against a flooded housing - inspect and lightly grease your port O-ring before every trip, and swap it the moment you see any cracking, flattening, or debris embedded in the rubber.