-047 BLACK BUNA 70D O-RING

Buna-N O-Ring, 4.489 in ID x 0.07 CS, 70A, Black, -40 to 250°F

Status
Available
Est. Ship Date
31 Oct 2026
Material
Buna-N (Nitrile / NBR)
Dash Size
47
Durometer
70 Shore A
Cross Section Type
Round
Color
Black
Minimum Temperature
-40°F (-40°C)
Maximum Temperature
250°F (121°C)
Nominal Cross Section
1/16 inch
Nominal Inside Diameter
4 1/2 inch
Nominal Outside Diameter
4 5/8 inch
Unit of Measure
EA
SKU:
H70047
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Product Specification

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This o-ring is supplied in AS568-047 black Buna-N (Nitrile) 70 Shore A built to an inside diameter of 4.489 in (114.02 mm), a cross section of 0.07 in (1.78 mm), and an outside diameter of 4.629 in (117.58 mm), catalogued under part number H70047. It remains the most cost-effective sealing element available for pressurized assemblies.

The material holds up against greases and lubricants, propane and butane, and hydraulic fluids. Buna-N (Nitrile) is valued for strong abrasion and tear resistance, reliable performance in both static and dynamic service. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). Exposure to polar solvents or strong acids will shorten service life.

It sees regular use in construction equipment, agricultural equipment, and hydraulic and pneumatic systems.

Stocked as H70047 and sold individually. Unit weight is approximately 1.1108 g and nominal inside diameter is listed as 4 1/2 inch. Review your operating media and conditions against this specification before installation. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.
Item
H70047
Description
-047 BLACK BUNA 70D O-RING
Actual Cross Section
0.07 inch (1.78 mm)
Actual Inside Diameter
4.489 inch (114.02 mm)
Actual Outside Diameter
4.629 inch (117.58 mm)
FDA Compliant
No
Measurement System
Imperial
Metal Detectable
No
NSF Certified
No
Product Code
6005
Product Category
O-Rings - Bulk - Commodity