-221 BLACK CHLOROPRENE 70D O-RING

The N70221 is an AS568-221 black Neoprene (Chloroprene) 70 Shore A O-Ring with an inside diameter of 1.421 in (36.09 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 1.699 in (43.15 mm). This o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.

As a material, Neoprene (Chloroprene) is widely chosen for good resilience across a moderate temperature band and strong performance in refrigeration circuits. It resists mild acids, moderate petroleum oil exposure, and refrigerants and ammonia. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). It is not the right choice where chlorinated solvents or aromatic hydrocarbons are present.

Maintenance and OEM teams specify it across marine equipment, transit and rail, and HVAC and refrigeration.

Stocked as N70221 and sold individually. Unit weight is approximately 1.71 g and nominal inside diameter is listed as 1 7/16 inch. Application requirements vary, so validate compatibility with your process conditions prior to installation. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.