5MM CS X 126MM ID BLACK BUNA 70D

Buna-N O-Ring, 5 x 126 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:
H5X126
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Product Specification

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Ordered as H5X126, this is a black Buna-N (Nitrile) 70 Shore A O-Ring supplied with an inside diameter of 126 mm (4.961 in), a cross section of 5 mm (0.197 in), and an outside diameter of 136 mm (5.35 in). The o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.

The compound resists propane and butane, hydraulic fluids, and greases and lubricants. Buna-N (Nitrile) is known for an economical choice for high-volume maintenance programs, strong abrasion and tear resistance. 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 automotive brake fluid or strong acids are present.

Common environments for this compound include fluid power, hydraulic and pneumatic systems, and construction equipment.

H5X126 ships individually. Unit weight is approximately 9.8689 g. Review your operating media and conditions against this specification before installation. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.
Item
H5X126
Description
5MM CS X 126MM ID BLACK BUNA 70D
Actual Outside Diameter
136 mm (5.35 inch)
Actual Cross Section
5 mm (0.197 inch)
Actual Inside Diameter
126 mm (4.961 inch)
FDA Compliant
No
Measurement System
Metric
Metal Detectable
No
NSF Certified
No
Product Code
6015
Product Category
O-Rings - Metric - Commodity