The H70MD155 is an AS568-155 black Buna-N (Nitrile) 70 Shore A O-Ring with an inside diameter of 3.987 in (101.27 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 4.193 in (106.5 mm). This o-ring delivers dependable bidirectional sealing in a compact groove envelope.
As a material, Buna-N (Nitrile) delivers reliable performance in both static and dynamic service, low compression set under sustained load. This material stands up to hydraulic fluids, petroleum-based oils, and water. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service. It should not be specified for service in ozone and direct sunlight or strong acids.
This item is metal detectable for HACCP and foreign-body control programs. You will find this material specified across agricultural equipment, general industrial maintenance, and hydraulic and pneumatic systems.
H70MD155 ships individually. Nominal inside diameter is listed as 4 inch. Application requirements vary, so validate compatibility with your process conditions prior to installation.
Description -155 BLACK BUNA 70D O-RING
Actual Cross Section 0.103 inch (2.62 mm)
Actual Inside Diameter 3.987 inch (101.27 mm)
Actual Outside Diameter 4.193 inch (106.5 mm)
Measurement System Imperial
Product Category O-Rings - FDA / Metal Detectable