uxcell Nitrile Rubber O-Rings, 21mm OD 15mm ID 3mm Width, Metric Sealing Gasket, Pack of 20

Description

Features high temperature industrial duty black silicone tube dampeners.It fits for vacuum tube to stop noise and rattle of the tube. Made of silicon and not get hot and burn up.These are used in shocks, absorbing vibration, and many other uses.