-345 BLACK BUNA 90D O-RING

The H90345 is an AS568-345 black Buna-N (Nitrile) 90 Shore A O-Ring built to an inside diameter of 3.975 in (100.97 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 4.395 in (111.63 mm). This o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.

Buna-N (Nitrile) is valued for an economical choice for high-volume maintenance programs and low compression set under sustained load. This material stands up to greases and lubricants, petroleum-based oils, and many alcohols. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service. Exposure to polar solvents or ketones will shorten service life.

It sees regular use in agricultural equipment, fluid power, and hydraulic and pneumatic systems.

H90345 ships individually. Unit weight is approximately 9.64 g. Application requirements vary, so validate compatibility with your process conditions prior to installation.