5.3MM CS X 355MM ID BLACK BUNA 70D

Buna-N O-Ring, 5.3 x 355 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:
H5.3X355
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Product Specification

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APG stocks the H5.3X355, a black Buna-N (Nitrile) 70 Shore A O-Ring supplied with an inside diameter of 355 mm (13.976 in), a cross section of 5.3 mm (0.209 in), and an outside diameter of 365.6 mm (14.39 in). An o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.

Buna-N (Nitrile) is valued for reliable performance in both static and dynamic service, strong abrasion and tear resistance. Expect good resistance to water, greases and lubricants, and hydraulic fluids. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). Exposure to ozone and direct sunlight or strong acids will shorten service life.

Typical settings include automotive, agricultural equipment, and fluid power.

This item is sold individually under part number H5.3X355. Unit weight is approximately 31.358 g. As always, verify media compatibility and operating conditions against the requirements of your specific application. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.
Item
H5.3X355
Description
5.3MM CS X 355MM ID BLACK BUNA 70D
Actual Outside Diameter
365.6 mm (14.39 inch)
Actual Cross Section
5.3 mm (0.209 inch)
Actual Inside Diameter
355 mm (13.976 inch)
FDA Compliant
No
Measurement System
Metric
Metal Detectable
No
NSF Certified
No
Product Code
6015
Product Category
O-Rings - Metric - Commodity