4MM CS X 180MM ID BLACK BUNA 70D

Buna-N O-Ring, 4 x 180 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:
H4X180
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Product Specification

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The H4X180 is a black Buna-N (Nitrile) 70 Shore A O-Ring supplied with an inside diameter of 180 mm (7.087 in), a cross section of 4 mm (0.157 in), and an outside diameter of 188 mm (7.4 in). This o-ring compresses into its gland to block fluid or gas migration across a joint.

Buna-N (Nitrile) is specified here for most widely specified general-purpose sealing elastomer and low compression set under sustained load. This material stands up to water, hydraulic fluids, and greases and lubricants. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C).

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

Order part number H4X180, sold individually. Unit weight is approximately 8.85 g. Application requirements vary, so validate compatibility with your process conditions prior to installation. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.
Item
H4X180
Description
4MM CS X 180MM ID BLACK BUNA 70D
Actual Outside Diameter
188 mm (7.4 inch)
Actual Cross Section
4 mm (0.157 inch)
Actual Inside Diameter
180 mm (7.087 inch)
FDA Compliant
No
Measurement System
Metric
Metal Detectable
No
NSF Certified
No
Product Code
6015
Product Category
O-Rings - Metric - Commodity