APG stocks the HSN70158, an AS568-158 black HNBR (Hydrogenated Nitrile) 70 Shore A O-Ring measuring an inside diameter of 4.737 in (120.32 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 4.943 in (125.55 mm). An o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.
It resists petroleum oils and fuels, sour gas and amine inhibitors, and heat and oxidation. HNBR (Hydrogenated Nitrile) is known for excellent abrasion and tear strength, improved ozone and weathering resistance over standard nitrile. Published continuous service range is -40°F (-40°C) to 325°F (162.8°C). It is not the right choice where chlorinated hydrocarbons or esters are present.
Common environments for this compound include automotive air conditioning, commercial refrigeration, and heavy-duty powertrain.
Stocked as HSN70158 and sold individually. Unit weight is approximately 2.437 g. Review your operating media and conditions against this specification before installation. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.
Description 568-158 BLACK HNBR HSN70 O-Ring
Actual Cross Section 0.103 inch (2.62 mm)
Actual Inside Diameter 4.737 inch (120.32 mm)
Actual Outside Diameter 4.943 inch (125.55 mm)
Measurement System Imperial
Product Category O-Rings - Bulk - Premium