This o-ring is supplied in AS568-347 black Buna-N (Nitrile) 70 Shore A measuring an inside diameter of 4.225 in (107.32 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 4.645 in (117.98 mm), catalogued under part number H70MD347. It delivers dependable bidirectional sealing in a compact groove envelope.
As a material, Buna-N (Nitrile) is specified for low compression set under sustained load, strong abrasion and tear resistance. Expect good resistance to greases and lubricants, hydraulic fluids, and many alcohols. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). It should not be specified for service in ketones or strong acids.
This item is metal detectable for HACCP and foreign-body control programs. Maintenance and OEM teams specify it across agricultural equipment, hydraulic and pneumatic systems, and automotive.
Order part number H70MD347, sold individually. Check the compound against your process media, pressure and temperature before committing to a design. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.
Description -347 BLACK BUNA 70D O-RING
Actual Cross Section 0.21 inch (5.33 mm)
Actual Inside Diameter 4.225 inch (107.32 mm)
Actual Outside Diameter 4.645 inch (117.98 mm)
Measurement System Imperial
Product Category O-Rings - FDA / Metal Detectable