Mutual Screw & Supply

0.139" CS X 2.609" ID Buna-N Nitrile O-Rings | AS568-231 | Dash 231 | Square Profile | 70 Durometer (110 / Pkg.)

0.139" CS X 2.609" ID Buna-N Nitrile O-Rings | AS568-231 | Dash 231 | Square - Main image
$38.26 $53.14 In stock

Buna-N Nitrile o-rings in AS568-231, 2.609" 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 (Square Profile)
  • Material: Buna-N Nitrile
  • AS568 dash size: 231
  • Cross-section: 0.139" (3.53 mm)
  • Inner diameter: 2.609" (66.27 mm)
  • Durometer: 70 Shore A
  • Temperature range: -40°F to +250°F (-40°C to +121°C)
  • Measurement type: Imperial
  • Pack quantity: 110 per package
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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 (4.8 / 5 · 5 reviews)

Eli ★★★★★

I needed a reliable seal for a medium-pressure hydraulic line, and these AS568-231 o-rings in 70 durometer Buna-N handled the 180°F oil temperature without any swelling. The 0.139" cross-section provided a snug fit on the first try.

Leo O. ★★★★★

The square profile on these o-rings fit perfectly into a tight groove where round ones always rolled out on me. Cross-section feels solid for the 70 durometer rating, and the 110-count package will last through multiple projects.

Alexander ★★★★★

I was replacing a stubborn seal on an old hydraulic cylinder, and the 70 durometer square profile grabbed tight without deforming. The inner diameter fit exactly as specified, and the whole package got me through the job with plenty of spares left over.