Mutual Screw & Supply

Buna-N Nitrile O-Rings | AS568-928 | Dash 928 | 90 Durometer (300 / Pkg.)

Buna-N Nitrile O-Rings | AS568-928 | Dash 928 | 90 Durometer (300 / Pkg.) - Main image
$37.58 $54.47 In stock

Buna-N Nitrile o-rings in AS568-928. 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: 928
  • Durometer: 90 Shore A
  • Temperature range: -40°F to +250°F (-40°C to +121°C)
  • Measurement type: Imperial
  • Pack quantity: 300 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 (4.4 / 5 · 5 reviews)

Richard ★★★★★

The 300-count pack is a solid deal when you're rebuilding a bunch of pneumatic fittings at once, and the -40°F rating gives me peace of mind for outdoor equipment in winter. These have a firm, dense feel that seats cleanly without squishing out of the groove.

Kevin ★★★★★

These 90 durometer rings are noticeably stiffer than the standard ones I've used before, which made fitting them into a tight groove much easier. The package of 300 should last me through several rebuilds.

Steven ★★★★★

Installed these on a water pump flange that sees constant 200°F heat, and they’ve held up perfectly for two months. The 90 durometer material is stiff enough to keep a tight seal without cracking.