Mutual Screw & Supply

0.21" CS X 9.475" ID Buna-N Nitrile O-Rings | AS568-369 | Dash 369 | 70 Durometer | Black (35 / Pkg.)

0.21" CS X 9.475" ID Buna-N Nitrile O-Rings | AS568-369 | Dash 369 | 70 - Main image
$38.84 $54.7 In stock

Buna-N Nitrile o-rings in AS568-369, 9.475" 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: 369
  • Cross-section: 0.21" (5.33 mm)
  • Inner diameter: 9.475" (240.66 mm)
  • Durometer: 70 Shore A
  • Color: Black
  • Temperature range: -40°F to +250°F (-40°C to +121°C)
  • Measurement type: Imperial
  • Pack quantity: 35 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)

Chloe A. ★★★★★

Finally found o-rings that seal properly on my hydraulic cylinder rebuild—the 9.475" ID is exactly right. The 70 durometer rubber feels firm but not brittle, and at this price for 35 pieces I've got spares for future jobs.

Amelia S. ★★★★★

These 35 o-rings fit the groove perfectly on my hydraulic cylinder rebuild. The 70 durometer has just the right firmness for sealing, and the -40°F rating gives me confidence in my cold storage setup.

Mia D. ★★★★★

The 0.21" cross-section is noticeably thicker than the old ones I tried to reuse, so this seal feels much more secure in the groove. Installed perfectly on first try, no leaks at all after pressurizing the line to 150 psi.