5.7MM CS X 229.3MM ID BLACK BUNA 70D

Buna-N O-Ring, 5.7 x 229.3 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:
H5.7X229.3
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Product Specification

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The H5.7X229.3 is a black Buna-N (Nitrile) 70 Shore A O-Ring with an inside diameter of 229.3 mm (9.028 in), a cross section of 5.7 mm (0.224 in), and an outside diameter of 240.7 mm (9.48 in). This o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load. The catalog record notes: Metric O-RING, JIS G230.

Buna-N (Nitrile) is specified here for economical choice for high-volume maintenance programs and most widely specified general-purpose sealing elastomer. This material stands up to propane and butane, petroleum-based oils, and hydraulic fluids. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C).

Common environments for this compound include hydraulic and pneumatic systems, agricultural equipment, and automotive.

Reference part number H5.7X229.3 when ordering; the item is sold individually. Unit weight is approximately 23.04 g. Application requirements vary, so validate compatibility with your process conditions prior to installation. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.
Item
H5.7X229.3
Description
5.7MM CS X 229.3MM ID BLACK BUNA 70D
Actual Outside Diameter
240.7 mm (9.48 inch)
Actual Cross Section
5.7 mm (0.224 inch)
Actual Inside Diameter
229.3 mm (9.028 inch)
FDA Compliant
No
Measurement System
Metric
Metal Detectable
No
NSF Certified
No
Product Code
6015
Product Category
O-Rings - Metric - Commodity