5.3MM CS X 365MM ID BLACK BUNA 70D

Buna-N O-Ring, 5.3 x 365 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:
H5.3X365
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Product Specification

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Part number H5.3X365 is a black Buna-N (Nitrile) 70 Shore A O-Ring built to an inside diameter of 365 mm (14.37 in), a cross section of 5.3 mm (0.209 in), and an outside diameter of 375.6 mm (14.79 in). An o-ring delivers dependable bidirectional sealing in a compact groove envelope.

Expect good resistance to petroleum-based oils, many alcohols, and propane and butane. Buna-N (Nitrile) is specified for low compression set under sustained load, reliable performance in both static and dynamic service. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). Verify compatibility before use with automotive brake fluid or ozone and direct sunlight.

Common environments for this compound include general industrial maintenance, automotive, and construction equipment.

H5.3X365 ships individually. Unit weight is approximately 31.425 g. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.
Item
H5.3X365
Description
5.3MM CS X 365MM ID BLACK BUNA 70D
Actual Outside Diameter
375.6 mm (14.79 inch)
Actual Cross Section
5.3 mm (0.209 inch)
Actual Inside Diameter
365 mm (14.37 inch)
FDA Compliant
No
Measurement System
Metric
Metal Detectable
No
NSF Certified
No
Product Code
6015
Product Category
O-Rings - Metric - Commodity