5.7MM CS X 299.3MM ID BLACK BUNA 90D

Buna-N O-Ring, 5.7 x 299.3 mm, 90A, Black, -40 to 250°F

Status
Available
Est. Ship Date
31 Oct 2026
Material
Buna-N (Nitrile / NBR)
Durometer
90 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:
H90M5.7X299.3
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Product Specification

-
Ordered as H90M5.7X299.3, this is a black Buna-N (Nitrile) 90 Shore A O-Ring supplied with an inside diameter of 299.3 mm (11.783 in), a cross section of 5.7 mm (0.224 in), and an outside diameter of 310.7 mm (12.23 in). The o-ring remains the most cost-effective sealing element available for pressurized assemblies. Source specification: Metric O-RING, JIS G300.

Buna-N (Nitrile) is specified here for reliable performance in both static and dynamic service, most widely specified general-purpose sealing elastomer. Expect good resistance to greases and lubricants, many alcohols, and hydraulic fluids. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service.

Typical settings include hydraulic and pneumatic systems, agricultural equipment, and fluid power.

This item is sold individually under part number H90M5.7X299.3. Unit weight is approximately 33.057 g. As always, verify media compatibility and operating conditions against the requirements of your specific application.
Item
H90M5.7X299.3
Description
5.7MM CS X 299.3MM ID BLACK BUNA 90D
Actual Outside Diameter
310.7 mm (12.23 inch)
Actual Cross Section
5.7 mm (0.224 inch)
Actual Inside Diameter
299.3 mm (11.783 inch)
FDA Compliant
No
Measurement System
Metric
Metal Detectable
No
NSF Certified
No
Product Code
6015
Product Category
O-Rings - Metric - Commodity