Hydraulic O-Ring Kit BOSS ORB Fittings 245 Pieces (12 Common Sizes) SAE 900 Series Buna-N 90 Durometer

High Quality Buna-N 90 Durometer Material (Also Known as Nitrile or NBR) has Excellent Oil Resistance, as well as Superior Resistance to Weather and Tearing. Buna-N Nitrile O-rings in 90 Durometer are Heat Resistant up to 212F and 250F Intermittent to -30F. 90 Durometer O-rings have a Harder and Denser Consistency and are Typically Used in Higher Pressure Applications. 12 of the Most Common Sizes of BOSS (ORB) O Rings are Included – a Total of 245 O-Rings. An Excellent Value. Used for Sealing Straight Thread Tube Fittings (BOSS Type) in Hydraulic Equipment. Boss Tube Fittings are Frequently used in Hydraulic Fittings, Hydraulic Pumping, Pneumatic Motors, Cylinders, Pumps, and Valves. A Convenient Sizing Chart is Printed on the Inside of the Case for Easy Identification and Selection. The Carrying Case Features a Multiple Compartment Design for Segmented Storage. Perfectly Sized for Storage in a Tool Box or Vehicle.. Assembled in the USA by Beaver Island Parts Company. A Small Business with Multiple Decades of Experience in the Industry