5.3MM CS X 85MM ID BLACK BUNA 70D

Buna-N O-Ring, 5.3 x 85 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:
H5.3X85
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Product Specification

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The H5.3X85 is a black Buna-N (Nitrile) 70 Shore A O-Ring measuring an inside diameter of 85 mm (3.346 in), a cross section of 5.3 mm (0.209 in), and an outside diameter of 95.6 mm (3.76 in). This o-ring delivers dependable bidirectional sealing in a compact groove envelope.

As a material, Buna-N (Nitrile) is specified for an economical choice for high-volume maintenance programs, reliable performance in both static and dynamic service. Expect good resistance to propane and butane, many alcohols, and hydraulic fluids. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). It is not the right choice where strong acids or automotive brake fluid are present.

Common environments for this compound include automotive, construction equipment, and fluid power.

H5.3X85 ships individually. Unit weight is approximately 7.8675 g. Review your operating media and conditions against this specification before installation.
Item
H5.3X85
Description
5.3MM CS X 85MM ID BLACK BUNA 70D
Actual Outside Diameter
95.6 mm (3.76 inch)
Actual Cross Section
5.3 mm (0.209 inch)
Actual Inside Diameter
85 mm (3.346 inch)
FDA Compliant
No
Measurement System
Metric
Metal Detectable
No
NSF Certified
No
Product Code
6015
Product Category
O-Rings - Metric - Commodity