H70MD265 is an AS568-265 black Buna-N (Nitrile) 70 Shore A O-Ring with an inside diameter of 7.734 in (196.44 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 8.012 in (203.5 mm). In service, this o-ring compresses into its gland to block fluid or gas migration across a joint.
The compound resists petroleum-based oils, many alcohols, and greases and lubricants. Buna-N (Nitrile) delivers low compression set under sustained load and the most widely specified general-purpose sealing elastomer. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C).
This o-ring is metal detectable for HACCP and foreign-body control programs. Typical settings include construction equipment, fluid power, and agricultural equipment.
Stocked as H70MD265 and sold individually. Nominal inside diameter is listed as 7 3/4 inch. Application requirements vary, so validate compatibility with your process conditions prior to installation. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.
Description -265 BLACK BUNA 70D O-RING
Actual Cross Section 0.139 inch (3.53 mm)
Actual Inside Diameter 7.734 inch (196.44 mm)
Actual Outside Diameter 8.012 inch (203.5 mm)
Measurement System Imperial
Product Category O-Rings - FDA / Metal Detectable