5.3MM CS X 69MM ID BLACK BUNA 70D

Buna-N O-Ring, 5.3 x 69 mm, 70A, Black, -40 to 250°F

Status
Available
Est. Ship Date
31 Oct 2026
Material
Buna-N (Nitrile / NBR)
Durometer
70 Shore A
Cross Section Type
Round
Color
Black
Minimum Temperature
-40°F (-40°C)
Maximum Temperature
250°F (121°C)
Unit of Measure
EA
SKU:
H5.3X69
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Product Specification

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This o-ring is supplied in black Buna-N (Nitrile) 70 Shore A with an inside diameter of 69 mm (2.717 in), a cross section of 5.3 mm (0.209 in), and an outside diameter of 79.6 mm (3.13 in), catalogued under part number H5.3X69. It seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.

Buna-N (Nitrile) is specified here for economical choice for high-volume maintenance programs and low compression set under sustained load. The compound resists petroleum-based oils, hydraulic fluids, and greases and lubricants. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). Applications involving strong acids or automotive brake fluid call for a different compound.

Typical settings include hydraulic and pneumatic systems, automotive, and fluid power.

H5.3X69 ships individually. Unit weight is approximately 6.4486 g. Check the compound against your process media, pressure and temperature before committing to a design. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.
Item
H5.3X69
Description
5.3MM CS X 69MM ID BLACK BUNA 70D
Actual Outside Diameter
79.6 mm (3.13 inch)
Actual Cross Section
5.3 mm (0.209 inch)
Actual Inside Diameter
69 mm (2.717 inch)
FDA Compliant
No
Measurement System
Metric
Metal Detectable
No
NSF Certified
No
Product Code
6015
Product Category
O-Rings - Metric - Commodity