Mutual Screw & Supply

0.21" CS X 8.475" ID Buna-N Nitrile O-Rings | AS568-365 | Dash 365 | 70 Durometer | Black (40 / Pkg.)

0.21" CS X 8.475" ID Buna-N Nitrile O-Rings | AS568-365 | Dash 365 | 70 - Main image
$39.82 $55.31 In stock

Buna-N Nitrile o-rings in AS568-365, 8.475" 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: 365
  • Cross-section: 0.21" (5.33 mm)
  • Inner diameter: 8.475" (215.26 mm)
  • Durometer: 70 Shore A
  • Color: Black
  • Temperature range: -40°F to +250°F (-40°C to +121°C)
  • Measurement type: Imperial
  • Pack quantity: 40 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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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)

Joshua ★★★★★

Replaced the old dried-out o-rings on my pressure washer with these and the 0.21" cross-section fit perfectly snug in the groove. No leaks so far, and I like that they handle up to 250°F since the water gets pretty hot.

Charlotte Y. ★★★★★

Popped these on my old hydraulic cylinder and they seated perfectly with no leaks. The 70 durometer feels just right—firm enough to hold pressure but not too stiff. Quick test at 180°F showed no swelling or distortion.

Aurora W. ★★★★★

Replacing the old cracked seals on my compressor was a breeze once these arrived, and the 8.475" inner diameter fit the groove perfectly with no wrestling. Noticed they're noticeably more flexible than the cheap ones I pulled off, which makes me trust the 70 durometer rating for the long haul. Defin