4MM CS X 260MM ID BLACK BUNA 70D

Buna-N O-Ring, 4 x 260 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:
H4X260
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Product Specification

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Ordered as H4X260, this is a black Buna-N (Nitrile) 70 Shore A O-Ring built to an inside diameter of 260 mm (10.236 in), a cross section of 4 mm (0.157 in), and an outside diameter of 268 mm (10.55 in). The o-ring compresses into its gland to block fluid or gas migration across a joint.

Buna-N (Nitrile) is specified here for economical choice for high-volume maintenance programs, reliable performance in both static and dynamic service. This material stands up to greases and lubricants, hydraulic fluids, and many alcohols. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). It should not be specified for service in polar solvents or ozone and direct sunlight.

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

Reference part number H4X260 when ordering; the item is sold individually. Unit weight is approximately 12.549 g. Application requirements vary, so validate compatibility with your process conditions prior to installation.
Item
H4X260
Description
4MM CS X 260MM ID BLACK BUNA 70D
Actual Outside Diameter
268 mm (10.55 inch)
Actual Cross Section
4 mm (0.157 inch)
Actual Inside Diameter
260 mm (10.236 inch)
FDA Compliant
No
Measurement System
Metric
Metal Detectable
No
NSF Certified
No
Product Code
6015
Product Category
O-Rings - Metric - Commodity