-412 BLACK BUNA 90D O-RING

Part number H90412 is an AS568-412 black Buna-N (Nitrile) 90 Shore A O-Ring supplied with 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 creates a positive seal at flange, piston and rod interfaces without added hardware.

Buna-N (Nitrile) is specified here for most widely specified general-purpose sealing elastomer, strong abrasion and tear resistance. The material holds up against propane and butane, petroleum-based oils, and greases and lubricants. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). Applications involving strong acids or ketones call for a different compound.

Maintenance and OEM teams specify it across agricultural equipment, construction equipment, and fluid power.

Stocked as H90412 and sold individually. Unit weight is approximately 13.442 g and nominal inside diameter is listed as 2 7/8 inch. Review your operating media and conditions against this specification before installation.