APG stocks the H70MD236, an AS568-236 black Buna-N (Nitrile) 70 Shore A O-Ring built to an inside diameter of 3.234 in (82.14 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 3.512 in (89.2 mm). An o-ring compresses into its gland to block fluid or gas migration across a joint.
As a material, Buna-N (Nitrile) is widely chosen for reliable performance in both static and dynamic service, an economical choice for high-volume maintenance programs. The compound resists many alcohols, water, and propane and butane. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C).
The compound is metal detectable for HACCP and foreign-body control programs. It sees regular use in hydraulic and pneumatic systems, agricultural equipment, and fluid power.
This item is sold individually under part number H70MD236. Nominal inside diameter is listed as 3 1/4 inch. Check the compound against your process media, pressure and temperature before committing to a design. For a size or compound outside the standard catalog, APG can quote from a print or sample.
description -236 BLACK BUNA 70D O-RING
uf_description2 METAL DETECTABLE, 0.139" (3.53MM) CS X 3.234" (82.14MM) ID
Actual_CS 0.139 inch (3.53 mm)
Actual_ID 3.234 inch (82.14 mm)
Actual_OD 3.512 inch (89.2 mm)
ProductCode Description O-Rings - FDA / Metal Detectable