H70MD263 is an AS568-263 black Buna-N (Nitrile) 70 Shore A O-Ring measuring an inside diameter of 7.234 in (183.74 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 7.512 in (190.8 mm). In service, this o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.
Buna-N (Nitrile) is specified for low compression set under sustained load and an economical choice for high-volume maintenance programs. This material stands up to hydraulic fluids, water, and propane and butane. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). Verify compatibility before use with ozone and direct sunlight or polar solvents.
This o-ring is metal detectable for HACCP and foreign-body control programs. You will find this material specified across hydraulic and pneumatic systems, automotive, and fluid power.
H70MD263 ships individually. Review your operating media and conditions against this specification before installation.
Description -263 BLACK BUNA 70D O-RING
Actual Cross Section 0.139 inch (3.53 mm)
Actual Inside Diameter 7.234 inch (183.74 mm)
Actual Outside Diameter 7.512 inch (190.8 mm)
Measurement System Imperial
Product Category O-Rings - FDA / Metal Detectable