White acetal tapered O-ring installation tool for scuba regulator second-stage barrels.

The O-Ring tool for the second-stage barrel is an installation sleeve to prevent overstretching and damaging critical second-stage O-rings.

Overstretching an O-ring during installation can cause micro-tears or permanent deformation, leading to slow leaks. This tool provides a smooth, tapered bridge that allows the rubber to slide effortlessly over the thick, sharp edges of the balanced second-stage barrel structure.

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