H70MD277 is an AS568-277 black Buna-N (Nitrile) 70 Shore A O-Ring supplied with an inside diameter of 11.484 in (291.69 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 11.762 in (298.75 mm). In service, this o-ring remains the most cost-effective sealing element available for pressurized assemblies.
This material stands up to propane and butane, greases and lubricants, and many alcohols. Buna-N (Nitrile) is specified for the most widely specified general-purpose sealing elastomer and low compression set under sustained load. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C).
This o-ring is metal detectable for HACCP and foreign-body control programs. It sees regular use in agricultural equipment, fluid power, and general industrial maintenance.
Stocked as H70MD277 and sold individually. Nominal inside diameter is listed as 11 1/2 inch. Application requirements vary, so validate compatibility with your process conditions prior to installation.
Description -277 BLACK BUNA 70D O-RING
Actual Cross Section 0.139 inch (3.53 mm)
Actual Inside Diameter 11.484 inch (291.69 mm)
Actual Outside Diameter 11.762 inch (298.75 mm)
Measurement System Imperial
Product Category O-Rings - FDA / Metal Detectable