Part number H70MD412 is an AS568-412 black Buna-N (Nitrile) 70 Shore A O-Ring built to an inside diameter of 2.85 in (72.39 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 3.4 in (86.36 mm). An o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.
As a material, Buna-N (Nitrile) offers an economical choice for high-volume maintenance programs and the most widely specified general-purpose sealing elastomer. The compound resists many alcohols, hydraulic fluids, and water. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C).
This o-ring is metal detectable for HACCP and foreign-body control programs. Common environments for this compound include fluid power, automotive, and general industrial maintenance.
This item is sold individually under part number H70MD412. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.
Description -412 BLACK BUNA 70D O-RING
Actual Cross Section 0.275 inch (6.99 mm)
Actual Inside Diameter 2.85 inch (72.39 mm)
Actual Outside Diameter 3.4 inch (86.36 mm)
Measurement System Imperial
Product Category O-Rings - FDA / Metal Detectable