Mutual Screw & Supply

Buna-N Nitrile O-Rings | AS568-448 | Dash 448 | 70 Durometer | Black (18 / Pkg.)

Buna-N Nitrile O-Rings | AS568-448 | Dash 448 | 70 Durometer | Black (18 / Pkg.) - Main image
$34.76 $54.31 In stock

Buna-N Nitrile o-rings in AS568-448. 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: 448
  • Durometer: 70 Shore A
  • Color: Black
  • Temperature range: -40°F to +250°F (-40°C to +121°C)
  • Measurement type: Imperial
  • Pack quantity: 18 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)

Lily C. ★★★★★

Had a small coolant leak on my milling machine that these fixed perfectly, the -40°F rating gives me confidence for winter use. For the price of an 18-pack, I’ll be stocking up.

Benjamin ★★★★★

The 70 durometer stiffness feels just right for a snug fit without being a pain to wrestle into place, and the -40°F to +250°F range covers everything I run through the system. Eighteen in a pack means I’ve got spares on the shelf for the next rebuild.

Claire ★★★★★

These are the exact size I needed for a rebuild and the 70 durometer feels plenty firm for the pressure. The temp range is wide enough that I don't have to worry about them failing in the cold.