Ordered as N70338, this is an AS568-338 black Neoprene (Chloroprene) 70 Shore A O-Ring supplied with an inside diameter of 3.1 in (78.74 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 3.52 in (89.41 mm). The o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.
Neoprene (Chloroprene) is specified here for inherent flame-retarding characteristics and good resilience across a moderate temperature band. It resists moderate petroleum oil exposure, refrigerants and ammonia, and mild acids. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). Exposure to aromatic hydrocarbons or strong oxidizing acids will shorten service life.
It sees regular use in marine equipment, HVAC and refrigeration, and weather sealing and enclosures.
Stocked as N70338 and sold individually. Unit weight is approximately 8.2589 g. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing.
Description -338 BLACK CHLOROPRENE 70D O-RING
Actual Cross Section 0.21 inch (5.33 mm)
Actual Inside Diameter 3.1 inch (78.74 mm)
Actual Outside Diameter 3.52 inch (89.41 mm)
Measurement System Imperial
Product Category O-Rings - Bulk - Commodity