Mutual Screw & Supply

0.139" CS X 6.984" ID Buna-N Nitrile O-Rings | AS568-264 | Dash 264 | 70 Durometer | Black (60 / Pkg.)

0.139" CS X 6.984" ID Buna-N Nitrile O-Rings | AS568-264 | Dash 264 | 70 - Main image
$35.12 $50.9 In stock

Buna-N Nitrile o-rings in AS568-264, 6.984" 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: 264
  • Cross-section: 0.139" (3.53 mm)
  • Inner diameter: 6.984" (177.39 mm)
  • Durometer: 70 Shore A
  • Color: Black
  • Temperature range: -40°F to +250°F (-40°C to +121°C)
  • Measurement type: Imperial
  • Pack quantity: 60 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 (5.0 / 5 · 5 reviews)

Madison ★★★★★

The 6.984" inner diameter was spot-on for my flange, and the 70 durometer gives just the right firmness without being impossible to seat. Ordered the 60-pack so I’ve got spares for every future teardown, and at -40°F rating they’ll handle my outdoor compressor all winter.

Claire E. ★★★★★

I needed a large-diameter seal for a hydraulic cylinder rebuild, and the 70-durometer hardness of these #264 o-rings gripped perfectly without being too stiff to install. The rubber feels dense but flexible, and they seated evenly in the groove.

William Q. ★★★★★

For a 6.984" inner diameter, these #264 rings seat perfectly in my deep-groove flanges and the 70 durometer is firm enough to hold pressure without getting brittle in the heat. I've used them up to 220°F on a hydraulic line for three weeks now and there's zero weeping at the seal. The pack of 60 mea