Ordered as N70243, this is an AS568-243 black Neoprene (Chloroprene) 70 Shore A O-Ring measuring an inside diameter of 4.109 in (104.37 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 4.387 in (111.43 mm). The o-ring remains the most cost-effective sealing element available for pressurized assemblies.
As a material, Neoprene (Chloroprene) delivers inherent flame-retarding characteristics and good resilience across a moderate temperature band. The compound resists refrigerants and ammonia, ozone and weathering, and sunlight and salt spray. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). Verify compatibility before use with ketones or strong oxidizing acids.
Common environments for this compound include HVAC and refrigeration, general industrial, and marine equipment.
Stocked as N70243 and sold individually. Unit weight is approximately 4.7351 g. Check the compound against your process media, pressure and temperature before committing to a design. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.
Description -243 BLACK CHLOROPRENE 70D O-RING
Actual Cross Section 0.139 inch (3.53 mm)
Actual Inside Diameter 4.109 inch (104.37 mm)
Actual Outside Diameter 4.387 inch (111.43 mm)
Measurement System Imperial
Product Category O-Rings - Bulk - Commodity