The N70259 is an AS568-259 black Neoprene (Chloroprene) 70 Shore A O-Ring measuring an inside diameter of 6.234 in (158.34 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 6.512 in (165.4 mm). This o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.
As a material, Neoprene (Chloroprene) is valued for inherent flame-retarding characteristics and dependable general-purpose sealing in exposed installations. This material stands up to moderate petroleum oil exposure, ozone and weathering, and refrigerants and ammonia. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). Exposure to aromatic hydrocarbons or strong oxidizing acids will shorten service life.
You will find this material specified across weather sealing and enclosures, HVAC and refrigeration, and marine equipment.
This item is sold individually under part number N70259. Unit weight is approximately 6.9749 g and nominal inside diameter is listed as 6 1/4 inch. Check the compound against your process media, pressure and temperature before committing to a design. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.
description -259 BLACK CHLOROPRENE 70D O-RING
uf_description2 0.139" (3.53MM) CS X 6.234" (158.34MM) ID
Actual_CS 0.139 inch (3.53 mm)
Actual_ID 6.234 inch (158.34 mm)
Actual_OD 6.512 inch (165.4 mm)
ProductCode Description O-Rings - Bulk - Commodity