-220 BLACK BUNA 70D O-RING

H70MD220 is an AS568-220 black Buna-N (Nitrile) 70 Shore A O-Ring with an inside diameter of 1.359 in (34.52 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 1.637 in (41.58 mm). In service, this o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.

Buna-N (Nitrile) delivers strong abrasion and tear resistance, reliable performance in both static and dynamic service. Expect good resistance to petroleum-based oils, many alcohols, and hydraulic fluids. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). It is not the right choice where automotive brake fluid or ozone and direct sunlight are present.

This o-ring is metal detectable for HACCP and foreign-body control programs. Maintenance and OEM teams specify it across general industrial maintenance, automotive, and agricultural equipment.

H70MD220 ships individually. Review your operating media and conditions against this specification before installation.