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Silicone Boss o-rings

Hydraulic SAE Straight Thread Boss o-rings are used at the base of straight threads typically used on plugs or adapters for ports. Those listed in this category are made of Silicone material for those high heat or food grade applications. Check a chemical compatibility chart.



Shipping $3.00 on all orders under $15 in the USA


Orders over $15 SHIP FREE first class USPS in the USA 


Orders over $50 SHIP FREE Priority 2-3 day in the USA