-438 BLACK CHLOROPRENE 70D O-RING

The N70438 is an AS568-438 black Neoprene (Chloroprene) 70 Shore A O-Ring measuring an inside diameter of 6.225 in (158.12 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 6.775 in (172.09 mm). This o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.

Neoprene (Chloroprene) delivers strong performance in refrigeration circuits and inherent flame-retarding characteristics. Expect good resistance to mild acids, moderate petroleum oil exposure, and sunlight and salt spray. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). Exposure to aromatic hydrocarbons or strong oxidizing acids will shorten service life.

Common environments for this compound include HVAC and refrigeration, marine equipment, and general industrial.

Reference part number N70438 when ordering; the item is sold individually. Unit weight is approximately 27.867 g and nominal inside diameter is listed as 6 1/4 inch. Application requirements vary, so validate compatibility with your process conditions prior to installation. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.