Rebuild your suit to a Silicone WristSeal suit. No more ruined dive weekends due to a ripped seal. Just loosen the ring and exchange the seal in 2 minutes. We strongly recommend that this kit is mounted by a professional workshop. Ask your dealer for the closest professional workshop. The PU-ring that is glued to the suit has the following circumferences: Inner: 295mm, Outer: 305-310mm or 340-345mm. Quick Seal Kit includes: 2 pcs. Silicone WristSeal 2 pcs. PU ring 2 pcs. Stiff ring