5MM CS X 240MM ID BLACK BUNA 70D

Buna-N O-Ring, 5 x 240 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:
H5X240
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Product Specification

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This o-ring is supplied in black Buna-N (Nitrile) 70 Shore A built to an inside diameter of 240 mm (9.449 in), a cross section of 5 mm (0.197 in), and an outside diameter of 250 mm (9.84 in), catalogued under part number H5X240. It remains the most cost-effective sealing element available for pressurized assemblies.

The material holds up against petroleum-based oils, greases and lubricants, and hydraulic fluids. Buna-N (Nitrile) offers 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 ozone and direct sunlight or polar solvents will shorten service life.

You will find this material specified across construction equipment, general industrial maintenance, and hydraulic and pneumatic systems.

Order part number H5X240, sold individually. Unit weight is approximately 18.219 g. Review your operating media and conditions against this specification before installation. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.
Item
H5X240
Description
5MM CS X 240MM ID BLACK BUNA 70D
Actual Outside Diameter
250 mm (9.84 inch)
Actual Cross Section
5 mm (0.197 inch)
Actual Inside Diameter
240 mm (9.449 inch)
FDA Compliant
No
Measurement System
Metric
Metal Detectable
No
NSF Certified
No
Product Code
6015
Product Category
O-Rings - Metric - Commodity