5MM CS X 305MM ID BLACK BUNA 70D

Buna-N O-Ring, 5 x 305 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:
H5X305
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Product Specification

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Part number H5X305 is a black Buna-N (Nitrile) 70 Shore A O-Ring supplied with an inside diameter of 305 mm (12.008 in), a cross section of 5 mm (0.197 in), and an outside diameter of 315 mm (12.4 in). An o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.

Buna-N (Nitrile) is valued for the most widely specified general-purpose sealing elastomer and low compression set under sustained load. The material holds up against hydraulic fluids, greases and lubricants, and propane and butane. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). Verify compatibility before use with strong acids or automotive brake fluid.

Typical settings include agricultural equipment, general industrial maintenance, and automotive.

Order part number H5X305, sold individually. Unit weight is approximately 23.353 g. As always, verify media compatibility and operating conditions against the requirements of your specific application. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.
Item
H5X305
Description
5MM CS X 305MM ID BLACK BUNA 70D
Actual Outside Diameter
315 mm (12.4 inch)
Actual Cross Section
5 mm (0.197 inch)
Actual Inside Diameter
305 mm (12.008 inch)
FDA Compliant
No
Measurement System
Metric
Metal Detectable
No
NSF Certified
No
Product Code
6015
Product Category
O-Rings - Metric - Commodity