Mutual Screw & Supply

0.21" CS X 1.725" ID Buna-N Nitrile O-Rings | AS568-327 | Dash 327 | 90 Durometer (200 / Pkg.)

0.21" CS X 1.725" ID Buna-N Nitrile O-Rings | AS568-327 | Dash 327 | 90 - Main image
$42.05 $62.76 In stock

Buna-N Nitrile o-rings in AS568-327, 1.725" 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: 327
  • Cross-section: 0.21" (5.33 mm)
  • Inner diameter: 1.725" (43.81 mm)
  • Durometer: 90 Shore A
  • Temperature range: -40°F to +250°F (-40°C to +121°C)
  • Measurement type: Imperial
  • Pack quantity: 200 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)

Ryan ★★★★★

The temperature range is the selling point for me—these handle everything from freezing shop floors to warm hydraulic lines without complaint. The 90 durometer hardness also means they hold their shape better than the softer ones I've used before. A full 200 in the bag is plenty to keep spares on ha

James P. ★★★★★

I was replacing worn-out seals on a hydraulic cylinder and these o-rings fit perfectly; the 90 durometer material feels tough enough to last. The 1.725" inner diameter matched my application exactly, and they arrived well-organized in the package. Got the job done quickly without any leaks.

Aurora Q. ★★★★★

I’ve been using these for a pneumatic seal repair on an industrial press, and the 0.21” cross-section fits perfectly without any leaks. They held up well even when the temperature spiked near 200°F for several hours straight.