Mutual Screw & Supply

0.21" CS X 3.35" ID Buna-N Nitrile O-Rings | AS568-340 | Dash 340 | 70 Durometer | Black (100 / Pkg.)

0.21" CS X 3.35" ID Buna-N Nitrile O-Rings | AS568-340 | Dash 340 | 70 - Main image
$33.73 $51.89 In stock

Buna-N Nitrile o-rings in AS568-340, 3.35" 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: 340
  • Cross-section: 0.21" (5.33 mm)
  • Inner diameter: 3.35" (85.09 mm)
  • Durometer: 70 Shore A
  • Color: Black
  • Temperature range: -40°F to +250°F (-40°C to +121°C)
  • Measurement type: Imperial
  • Pack quantity: 100 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)

Avery P. ★★★★★

The cross-section thickness on these o-rings is exactly as specified, and they seated perfectly in my pneumatic fitting without any rolling. I've had them in a hot water application around 200°F for a week now with zero leaks.

Eva B. ★★★★★

These o-rings fit perfectly into a pneumatic cylinder I was rebuilding. The 70 durometer has just the right firmness for a good seal without being too stiff.

Madison H. ★★★★★

Had a small leak on a hydraulic fitting that these 3.35" ID rings sealed perfectly. The 70 durometer feels pliable enough to seat well but firm enough to hold pressure. Glad I finally grabbed a pack of these.