Mutual Screw & Supply

0.21" CS X 9.725" ID Buna-N Nitrile O-Rings | AS568-370 | Dash 370 | 70 Durometer | Black (30 / Pkg.)

0.21" CS X 9.725" ID Buna-N Nitrile O-Rings | AS568-370 | Dash 370 | 70 - Main image
$39.25 $52.33 In stock

Buna-N Nitrile o-rings in AS568-370, 9.725" inner diameter by 0.21" 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: 370
  • Cross-section: 0.21" (5.33 mm)
  • Inner diameter: 9.725" (247.01 mm)
  • Durometer: 70 Shore A
  • Color: Black
  • Temperature range: -40°F to +250°F (-40°C to +121°C)
  • Measurement type: Imperial
  • Pack quantity: 30 per package
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Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

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)

Benjamin R. ★★★★★

I replaced a leaking gasket in a hydraulic cylinder with these 9.725" ID Buna-N o-rings, and the 0.21" cross-section fit the groove perfectly. The rubber held up during a 150°F test cycle without any deformation.

Harper ★★★★★

These o-rings seated perfectly into the grooves of my hydraulic cylinder, and the 70 durometer gave just the right amount of seal without being too stiff. The -40°F to +250°F temperature range is exactly what I needed for my outdoor equipment.

Olivia ★★★★★

Finally found a dash 370 o-ring that actually seals my hydraulic reservoir without leaking; the 70 durometer gives just the right amount of compression without being too stiff. The 9.725" ID fits perfectly over the flange, and the Buna-N material handles the heat from the pump just fine.