Mutual Screw & Supply

Buna-N Nitrile O-Rings | AS568-458 | Dash 458 | 70 Durometer | Black (10 / Pkg.)

Buna-N Nitrile O-Rings | AS568-458 | Dash 458 | 70 Durometer | Black (10 / Pkg.) - Main image
$36.05 $53.81 In stock

Buna-N Nitrile o-rings in AS568-458. 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: 458
  • 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 (4.8 / 5 · 5 reviews)

Timothy M. ★★★★★

The 70 durometer is just firm enough to seat perfectly in my air compressor fittings without leaking. These black Buna-N rings handled a weekend project at 200°F with no signs of wear.

Ryan Z. ★★★★★

I've been using these for a hydraulic repair job and the 70 durometer feels just right—firm enough to hold pressure but not brittle. The temperature range covers my gear perfectly, and they seated without any hassle.

Riley T. ★★★★★

These arrived in a sturdy little bag, which is good because I already had to root through them twice for a project. The 70 durometer hardness feels just right for the hydraulic fitting I needed to seal, and they slipped on without any wrestling. Solid pick if you're tired of squishy cheap rings.