Mutual Screw & Supply

0.139" CS X 10.234" ID Buna-N Nitrile O-Rings | AS568-277 | Dash 277 | 70 Durometer | Black (35 / Pkg.)

0.139" CS X 10.234" ID Buna-N Nitrile O-Rings | AS568-277 | Dash 277 | 70 - Main image
$39.05 $54.24 In stock

Buna-N Nitrile o-rings in AS568-277, 10.234" inner diameter by 0.139" cross-section. Service range -40°F to +250°F (-40°C to +121°C). Also known as NBR, Buna-N, Chemigum, Hycar, Perbunan.

Specifications

  • Product type: O-Ring
  • Material: Buna-N Nitrile
  • AS568 dash size: 277
  • Cross-section: 0.139" (3.53 mm)
  • Inner diameter: 10.234" (259.94 mm)
  • Durometer: 70 Shore A
  • Color: Black
  • Temperature range: -40°F to +250°F (-40°C to +121°C)
  • Measurement type: Imperial
  • Pack quantity: 35 per package
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Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

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Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (4.6 / 5 · 5 reviews)

Aurora B. ★★★★★

The 70 durometer hardness is spot on for my application—firm enough to hold pressure but still easy to work into the groove. These fit my hydraulic manifold perfectly and should handle the heat range I need without issue.

Charlotte ★★★★★

The inner diameter of 10.234 inches fit my hydraulic cylinder perfectly, and the -40°F to +250°F temperature range gives me peace of mind for outdoor equipment. Much more durable than the generic rubber rings I was using before.

Edward T. ★★★★★

The 70 durometer hardness is exactly what I needed for a stubborn flange seal, and the 10.234" ID fit the groove perfectly on the first try. These buna-n rings handled a hot oil leak without softening, and the pack of 35 should last me years.