Mutual Screw & Supply

Buna-N Nitrile O-Rings | AS568-457 | Dash 457 | 70 Durometer | Black (10 / Pkg.)

Buna-N Nitrile O-Rings | AS568-457 | Dash 457 | 70 Durometer | Black (10 / Pkg.) - Main image
$39.88 $53.17 In stock

Buna-N Nitrile o-rings in AS568-457. 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: 457
  • Durometer: 70 Shore A
  • Color: Black
  • Temperature range: -40°F to +250°F (-40°C to +121°C)
  • Measurement type: Imperial
  • Pack quantity: 10 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 (5.0 / 5 · 5 reviews)

Ruby ★★★★★

Took a chance on these for a hot-water line repair and the -40°F to +250°F range gives me peace of mind for seasonal swings. The 70 durometer hardness feels firm but not brittle, and they seated into the groove without any wrestling.

Kevin ★★★★★

The 70 durometer stiffness is exactly what I needed for a hydraulic fitting that kept weeping under pressure. Ten in a pack means I've got spares for the next job, and the -40°F rating gives me peace of mind for winter equipment.

Victoria N. ★★★★★

Used one of these to seal a coolant line on my old pump, and the -40°F rating gives me peace of mind for winter use. The 70 durometer feels just right—firm enough to hold pressure but not too stiff to seat.