8-130 BLACK BUNA 90D BACK-UP RING

Part number HB90130 is an AS568-130 black Buna-N (Nitrile) 90 Shore A Back-Up Ring supplied with an inside diameter of 1.612 in (40.94 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 1.818 in (46.18 mm). A back-up ring allows a standard o-ring to operate at higher pressures than it could unsupported.

As a material, Buna-N (Nitrile) delivers an economical choice for high-volume maintenance programs, strong abrasion and tear resistance. The material holds up against petroleum-based oils, greases and lubricants, and propane and butane. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C).

Maintenance and OEM teams specify it across fluid power, hydraulic and pneumatic systems, and agricultural equipment.

HB90130 ships individually. Unit weight is approximately 0.504 g. Review your operating media and conditions against this specification before installation.