APG stocks the H70MD038, an AS568-038 black Buna-N (Nitrile) 70 Shore A O-Ring measuring an inside diameter of 2.614 in (66.4 mm), a cross section of 0.07 in (1.78 mm), and an outside diameter of 2.754 in (69.95 mm). An o-ring remains the most cost-effective sealing element available for pressurized assemblies.
The material holds up against many alcohols, water, and hydraulic fluids. That behavior comes from the compound itself: Buna-N (Nitrile) is widely chosen for an economical choice for high-volume maintenance programs, reliable performance in both static and dynamic service. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service. Applications involving ketones or automotive brake fluid call for a different compound.
The compound is metal detectable for HACCP and foreign-body control programs. Common environments for this compound include fluid power, automotive, and hydraulic and pneumatic systems.
This item is sold individually under part number H70MD038. Nominal inside diameter is listed as 2 5/8 inch. Check the compound against your process media, pressure and temperature before committing to a design. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.
description -038 BLACK BUNA 70D O-RING
uf_description2 METAL DETECTABLE, 0.070" (1.78MM) CS X 2.614" (66.4MM) ID
Actual_CS 0.07 inch (1.78 mm)
Actual_ID 2.614 inch (66.4 mm)
Actual_OD 2.754 inch (69.95 mm)
ProductCode Description O-Rings - FDA / Metal Detectable