This o-ring is supplied in AS568-243 black HNBR (Hydrogenated Nitrile) 70 Shore A supplied with an inside diameter of 4.109 in (104.37 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 4.387 in (111.43 mm), catalogued under part number HSN70243. It seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.
HNBR (Hydrogenated Nitrile) offers strong resistance to rapid gas decompression, long service life in refrigerant and oilfield duty. This material stands up to heat and oxidation, petroleum oils and fuels, and sour gas and amine inhibitors. Continuous operating temperature is published at -40°F (-40°C) to 325°F (162.8°C). Exposure to ketones or strong oxidizing acids will shorten service life.
It sees regular use in oilfield and downhole equipment, engine timing systems, and automotive air conditioning.
Order part number HSN70243, sold individually. Unit weight is approximately 3.9599 g and nominal inside diameter is listed as 4 1/8 inch. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing.
Description *568-243 BLACK HNBR HSN70 O-Ring
Actual Cross Section 0.139 inch (3.53 mm)
Actual Inside Diameter 4.109 inch (104.37 mm)
Actual Outside Diameter 4.387 inch (111.43 mm)
Measurement System Imperial
Product Category O-Rings - Bulk - Premium