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Buna-N Nitrile O-Rings | AS568-420 | Dash 420 | 70 Durometer | Black (50 / Pkg.)

Buna-N Nitrile O-Rings | AS568-420 | Dash 420 | 70 Durometer | Black (50 / Pkg.) - Main image
$38.74 $60.53 In stock

Buna-N Nitrile o-rings in AS568-420. 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: 420
  • Durometer: 70 Shore A
  • Color: Black
  • Temperature range: -40°F to +250°F (-40°C to +121°C)
  • Measurement type: Imperial
  • Pack quantity: 50 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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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 (4.8 / 5 · 5 reviews)

George I. ★★★★★

Fitting the AS568-420 spec was a breeze, and the -40°F to +250°F range gives me confidence for outdoor use this winter. These nitrile rings feel dense and durable right out of the package, no nicks or flash to clean up. Fifty in a pack means I’ve got backups for when I inevitably drop one under the

Ella ★★★★★

The 70 durometer hardness is spot on for the spec sheet, and they handled the hot transmission fluid without any swelling or leaks. Fifty of them in the pack means I've got plenty of spares for future projects.

Violet ★★★★★

Used these to rebuild a pneumatic cylinder on an old lathe, and they seated perfectly without any leaks. The 70 durometer hardness was just right for the application. Great value for the 50-pack.