APG stocks the N70339, an AS568-339 black Neoprene (Chloroprene) 70 Shore A O-Ring supplied with an inside diameter of 3.225 in (81.92 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 3.645 in (92.58 mm). An 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 a balanced combination of oil and weather resistance, inherent flame-retarding characteristics. Expect good resistance to mild acids, ozone and weathering, and sunlight and salt spray. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service. Applications involving ketones or chlorinated solvents call for a different compound.
It sees regular use in transit and rail, marine equipment, and general industrial.
Stocked as N70339 and sold individually. Unit weight is approximately 8.5713 g and nominal inside diameter is listed as 3 1/4 inch. Application requirements vary, so validate compatibility with your process conditions prior to installation. If you need a size, durometer or compound that is not listed, APG can cross-reference from a print, a sample or a competitor part number.
description -339 BLACK CHLOROPRENE 70D O-RING
uf_description2 0.210" (5.33MM) CS X 3.225" (81.92MM) ID
Actual_CS 0.21 inch (5.33 mm)
Actual_ID 3.225 inch (81.92 mm)
Actual_OD 3.645 inch (92.58 mm)
ProductCode Description O-Rings - Bulk - Commodity