4MM CS X 235MM ID BLACK BUNA 70D

Buna-N O-Ring, 4 x 235 mm, 70A, Black, -40 to 250°F

Status
Available
Est. Ship Date
1 Nov 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:
H4X235
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Product Specification

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H4X235 is a black Buna-N (Nitrile) 70 Shore A O-Ring supplied with an inside diameter of 235 mm (9.252 in), a cross section of 4 mm (0.157 in), and an outside diameter of 243 mm (9.57 in). In service, this o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.

Buna-N (Nitrile) is specified here for low compression set under sustained load and most widely specified general-purpose sealing elastomer. The compound resists hydraulic fluids, petroleum-based oils, and many alcohols. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service. It should not be specified for service in automotive brake fluid or strong acids.

Typical settings include hydraulic and pneumatic systems, automotive, and construction equipment.

Reference part number H4X235 when ordering; the item is sold individually. Application requirements vary, so validate compatibility with your process conditions prior to installation.
Item
H4X235
Description
4MM CS X 235MM ID BLACK BUNA 70D
Actual Outside Diameter
243 mm (9.57 inch)
Actual Cross Section
4 mm (0.157 inch)
Actual Inside Diameter
235 mm (9.252 inch)
FDA Compliant
No
Measurement System
Metric
Metal Detectable
No
NSF Certified
No
Product Code
6015
Product Category
O-Rings - Metric - Commodity