Replacement O-ring set for SportDiver Underwater Smartphone Housing. SeaLife SportDiver housing not included.

How to replace O-ring:
1.) Lift and remove O-rings from their grooves using the O-ring removal tool.
2.)Clean the O-ring grooves using a dampened, lint-free cotton cloth.
3.)Apply thin film of SeaLife Silicone O-ring lube (item SL9807) to the new O-rings.
4.)Use fingertips to evenly spread the lube. Don't stretch the O-rings.
5.)Install new, lubed O-rings in their groove being careful not to twist the O-rings.
6.)Check that O-rings are clean and evenly seated in their groove.