N70440 is an AS568-440 black Neoprene (Chloroprene) 70 Shore A O-Ring built to an inside diameter of 6.725 in (170.82 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 7.275 in (184.79 mm). In service, this o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.
Neoprene (Chloroprene) is specified here for strong performance in refrigeration circuits and inherent flame-retarding characteristics. Expect good resistance to ozone and weathering, sunlight and salt spray, and refrigerants and ammonia. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). Verify compatibility before use with chlorinated solvents or ketones.
It sees regular use in HVAC and refrigeration, transit and rail, and general industrial.
Order part number N70440, sold individually. Unit weight is approximately 30.0425 g. As always, verify media compatibility and operating conditions against the requirements of your specific application. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.
Description -440 BLACK CHLOROPRENE 70D O-RING
Actual Cross Section 0.275 inch (6.99 mm)
Actual Inside Diameter 6.725 inch (170.82 mm)
Actual Outside Diameter 7.275 inch (184.79 mm)
Measurement System Imperial
Product Category O-Rings - Bulk - Commodity