Mutual Screw & Supply

0.139" CS X 2.609" ID Buna-N Nitrile O-Rings | AS568-231 | Dash 231 | 70 Durometer | Black (250 / Pkg.)

0.139" CS X 2.609" ID Buna-N Nitrile O-Rings | AS568-231 | Dash 231 | 70 - Main image
$36.04 $60.06 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
  • 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
  • Color: Black
  • Temperature range: -40°F to +250°F (-40°C to +121°C)
  • Measurement type: Imperial
  • Pack quantity: 250 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)

Amelia W. ★★★★★

Needed a fresh batch of these for a hydraulic cylinder rebuild, and these 70-durometer rings handled the pressure test perfectly. The -40°F to 250°F service range gives me confidence they'll last in my shop's temperature swings.

Lucy ★★★★★

The 2.609-inch inner diameter was exactly what I needed for a hydraulic cylinder repair, and the rubber feels durable and flexible even after sitting in my cold garage. No leaks so far after a week of use.

Joseph X. ★★★★★

These 70-durometer rings seated perfectly in my pneumatic actuator rebuild. The 2.609" inner diameter matched the groove precisely, and so far no leaks.