4MM CS X 310MM ID BLACK BUNA 70D

Buna-N O-Ring, 4 x 310 mm, 70A, Black, -40 to 250°F

Status
Out of Stock
Est. Ship Date
3 Feb 2027
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:
H4X310
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Product Specification

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APG stocks the H4X310, a black Buna-N (Nitrile) 70 Shore A O-Ring measuring an inside diameter of 310 mm (12.205 in), a cross section of 4 mm (0.157 in), and an outside diameter of 318 mm (12.52 in). An o-ring delivers dependable bidirectional sealing in a compact groove envelope.

Buna-N (Nitrile) is specified here for economical choice for high-volume maintenance programs, reliable performance in both static and dynamic service. Expect good resistance to greases and lubricants, many alcohols, and petroleum-based oils. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). It should not be specified for service in ozone and direct sunlight or polar solvents.

You will find this material specified across hydraulic and pneumatic systems, construction equipment, and automotive.

H4X310 ships individually. Unit weight is approximately 15.295 g. Application requirements vary, so validate compatibility with your process conditions prior to installation.
Item
H4X310
Description
4MM CS X 310MM ID BLACK BUNA 70D
Actual Outside Diameter
318 mm (12.52 inch)
Actual Cross Section
4 mm (0.157 inch)
Actual Inside Diameter
310 mm (12.205 inch)
FDA Compliant
No
Measurement System
Metric
Metal Detectable
No
NSF Certified
No
Product Code
6015
Product Category
O-Rings - Metric - Commodity