-166 BLACK CHLOROPRENE 70D O-RING

Ordered as N70166, this is an AS568-166 black Neoprene (Chloroprene) 70 Shore A O-Ring supplied with an inside diameter of 6.737 in (171.12 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 6.943 in (176.35 mm). The o-ring compresses into its gland to block fluid or gas migration across a joint.

Expect good resistance to mild acids, moderate petroleum oil exposure, and sunlight and salt spray. That behavior comes from the compound itself: Neoprene (Chloroprene) offers strong performance in refrigeration circuits and dependable general-purpose sealing in exposed installations. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). Verify compatibility before use with strong oxidizing acids or chlorinated solvents.

Maintenance and OEM teams specify it across weather sealing and enclosures, marine equipment, and HVAC and refrigeration.

N70166 ships individually. Unit weight is approximately 4.11 g and nominal inside diameter is listed as 6 3/4 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.