A7786 110Pcs M6 to M20 Self-Centered Bonded Oil Seal Washer Assortment Kit
All of washers will be packed in a sturdy transparent plastic case, can be use for a storage box
Bonded seal consists of a metal ring and a rubber gasket. Metal ring done antirust processing, rubber ring generally uses oil resistant NBR or fluorine rubber
Bonded washers are used extensively for sealing under the heads of bolts in high pressure applications where coppers washers would be unsuitable. They are often used in hydraulic and pneumatic connections that are subject to extreme pressures
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A7786 110Pcs M6 to M20 Self-Centered Bonded Oil Seal Washer Assortment Kit