This o-ring is supplied in AS568-128 black Buna-N (Nitrile) 70 Shore A supplied with an inside diameter of 1.487 in (37.77 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 1.693 in (43 mm), catalogued under part number H70MD128. It compresses into its gland to block fluid or gas migration across a joint.
The compound resists water, many alcohols, and hydraulic fluids. That behavior comes from the compound itself: Buna-N (Nitrile) is specified for reliable performance in both static and dynamic service, an economical choice for high-volume maintenance programs. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service.
This item is metal detectable for HACCP and foreign-body control programs. Common environments for this compound include fluid power, construction equipment, and hydraulic and pneumatic systems.
This item is sold individually under part number H70MD128. Check the compound against your process media, pressure and temperature before committing to a design.
Description -128 BLACK BUNA 70D O-RING
Actual Cross Section 0.103 inch (2.62 mm)
Actual Inside Diameter 1.487 inch (37.77 mm)
Actual Outside Diameter 1.693 inch (43 mm)
Measurement System Imperial
Product Category O-Rings - FDA / Metal Detectable