O-rings can be made from a variety of materials including polyurethane, silicone and neoprene. O-rings provide a seal between two components to keep out air or fluid. New o-rings must be lubricated with grease when installed.
This item fits the following models:
15-pc Thunderbolt Black Oxide Drill Bit Set
1/4" x 50 Ft Noodle Air Hose with Coupler and Plug