Mutual Screw & Supply

0.139" CS X 3.359" ID Buna-N Nitrile O-Rings | AS568-237 | Dash 237 | 70 Durometer | Black (200 / Pkg.)

0.139" CS X 3.359" ID Buna-N Nitrile O-Rings | AS568-237 | Dash 237 | 70 - Main image
$42.71 $57.71 In stock

Buna-N Nitrile o-rings in AS568-237, 3.359" 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: 237
  • Cross-section: 0.139" (3.53 mm)
  • Inner diameter: 3.359" (85.32 mm)
  • Durometer: 70 Shore A
  • Color: Black
  • Temperature range: -40°F to +250°F (-40°C to +121°C)
  • Measurement type: Imperial
  • Pack quantity: 200 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 (4.8 / 5 · 5 reviews)

Julian ★★★★★

The 70 durometer hardness feels just right for seating firmly without fighting to install them, and the 3.359" ID matched my flange perfectly. I’ve had them in a hot oil line for weeks now, still holding strong with no distortion.

Sebastian U. ★★★★★

Needed these for a low-pressure air fitting repair and the 70 durometer was flexible enough to seat perfectly without tools. The pack of 200 means I'll have spares for future projects, which is nice.

Jason F. ★★★★★

The 0.139 cross-section seats snugly in our hydraulic cylinder grooves, and the 70-durometer rubber feels just right for the moderate pressure we're running. A full bag of 200 should last us through several rebuilds.