The HS70251 is an AS568-251 green HNBR (Hydrogenated Nitrile) 70 Shore A O-Ring with an inside diameter of 5.109 in (129.77 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 5.387 in (136.83 mm). This o-ring delivers dependable bidirectional sealing in a compact groove envelope.
HNBR (Hydrogenated Nitrile) delivers excellent abrasion and tear strength, the oil resistance of nitrile with substantially better heat capability. The compound resists modern refrigerants, heat and oxidation, and petroleum oils and fuels. Rated temperature range runs from -40°F (-40°C) to 325°F (162.8°C) in continuous service.
Typical settings include automotive air conditioning, oilfield and downhole equipment, and commercial refrigeration.
Stocked as HS70251 and sold individually. Review your operating media and conditions against this specification before installation. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.
Description 568-251 GREEN HNBR (HSN) 70 ORINGS
Actual Cross Section 0.139 inch (3.53 mm)
Actual Inside Diameter 5.109 inch (129.77 mm)
Actual Outside Diameter 5.387 inch (136.83 mm)
Measurement System Imperial
Product Category O-Rings - Bulk - Premium