290pcs set includes 21 small and large common sizes in SAE and metric
Material: Hydrogenated Nitrile Rubber (HNBR)
The heavy duty rubber rings is available for using in applications requiring higher resistance to chemicals and higher temperatures than NBR.
Suitable for high dynamic loads and is abrasion resistant, car, door, window, electric appliance, bearing, pump, carrier roller Auto, Home Appliances, Fittings, A/C Manifold and more
Convenient re-sealable plastic case