Mutual Screw & Supply

0.21" CS X 0.974" ID Buna-N Nitrile O-Rings | AS568-318 | Dash 318 | 90 Durometer (250 / Pkg.)

0.21" CS X 0.974" ID Buna-N Nitrile O-Rings | AS568-318 | Dash 318 | 90 - Main image
$34.11 $50.16 In stock

Buna-N Nitrile o-rings in AS568-318, 0.974" inner diameter by 0.21" cross-section. 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: 318
  • Cross-section: 0.21" (5.33 mm)
  • Inner diameter: 0.974" (24.74 mm)
  • Durometer: 90 Shore A
  • Temperature range: -40°F to +250°F (-40°C to +121°C)
  • Measurement type: Imperial
  • Pack quantity: 250 per package
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Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

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Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

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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)

Natalie ★★★★★

These came in organized packaging and the 90 durometer is noticeably stiffer than the standard ones I’ve used before, which should hold up better in a high-pressure fitting. Definitely the right choice for my hydraulic repair job.

Kevin V. ★★★★★

The 90-durometer hardness is exactly what I needed for a high-pressure hydraulic seal replacement. These o-rings feel substantial and are holding up great so far.

Carter X. ★★★★★

The 0.974" inner diameter fit perfectly on my hydraulic cylinder—no more leaks. The 90 durometer material is exactly what I needed for high-pressure seals, and the bulk pack of 250 will last me through several rebuilds.