Mutual Screw & Supply

0.139" CS X 1.859" ID Buna-N Nitrile O-Rings | AS568-225 | Dash 225 | 90 Durometer (250 / Pkg.)

0.139" CS X 1.859" ID Buna-N Nitrile O-Rings | AS568-225 | Dash 225 | 90 - Main image
$35.16 $50.95 In stock

Buna-N Nitrile o-rings in AS568-225, 1.859" inner diameter by 0.139" 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: 225
  • Cross-section: 0.139" (3.53 mm)
  • Inner diameter: 1.859" (47.22 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 (5.0 / 5 · 5 reviews)

Claire ★★★★★

The 90 durometer feels really sturdy, and the nitrile material holds up well under constant oil exposure. I used these for a compressor rebuild and they sealed perfectly on the first try. Exactly what I needed for a clean repair job.

Hannah ★★★★★

The 1.859" inner diameter fits my hydraulic cylinder perfectly, and the 250 count is enough for several rebuilds. I’ve had no issues with leaks since swapping to these o-rings.

Violet ★★★★★

The 90 durometer feels noticeably firmer than the standard ones I've used before, which is exactly what I needed for a high-pressure application. The 250-count box is a solid value, especially considering the wide -40° to 250° temperature range.