Mutual Screw & Supply

Buna-N Nitrile O-Rings | AS568-427 | Dash 427 | 70 Durometer | Black (40 / Pkg.)

Buna-N Nitrile O-Rings | AS568-427 | Dash 427 | 70 Durometer | Black (40 / Pkg.) - Main image
$40.06 $55.64 In stock

Buna-N Nitrile o-rings in AS568-427. 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: 427
  • Durometer: 70 Shore A
  • Color: Black
  • Temperature range: -40°F to +250°F (-40°C to +121°C)
  • Measurement type: Imperial
  • Pack quantity: 40 per package
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When it ships

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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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Delivery costs

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Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

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Returning an item

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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)

Emily ★★★★★

The 70 durometer hardness feels just right for my application, and knowing these handle up to 250°F gives me peace of mind. A full pack of 40 means I won't be scrambling for spares next time.

William ★★★★★

I needed a pack of backup o-rings for a pneumatic valve rebuild, and these 427-size rings seated perfectly with no leaks at 100 psi. The 70 durometer feels solid yet flexible enough for the job.

Owen W. ★★★★★

These fit perfectly on my hydraulic cylinder, and the 70 durometer feels nice and firm. I'm glad I got the 40-pack, since I always seem to lose a few mid-project.