5MM CS X 127MM ID BLACK BUNA 70D

Buna-N O-Ring, 5 x 127 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:
H5X127
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Product Specification

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Ordered as H5X127, this is a black Buna-N (Nitrile) 70 Shore A O-Ring supplied with an inside diameter of 127 mm (5 in), a cross section of 5 mm (0.197 in), and an outside diameter of 137 mm (5.39 in). The o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.

This material stands up to greases and lubricants, water, and hydraulic fluids. Buna-N (Nitrile) is known for reliable performance in both static and dynamic service, low compression set under sustained load. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). Exposure to polar solvents or automotive brake fluid will shorten service life.

Common environments for this compound include hydraulic and pneumatic systems, automotive, and general industrial maintenance.

Reference part number H5X127 when ordering; the item is sold individually. Check the compound against your process media, pressure and temperature before committing to a design. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.
Item
H5X127
Description
5MM CS X 127MM ID BLACK BUNA 70D
Actual Outside Diameter
137 mm (5.39 inch)
Actual Cross Section
5 mm (0.197 inch)
Actual Inside Diameter
127 mm (5 inch)
FDA Compliant
No
Measurement System
Metric
Metal Detectable
No
NSF Certified
No
Product Code
6015
Product Category
O-Rings - Metric - Commodity