Mutual Screw & Supply

0.21" CS X 2.1" ID Buna-N Nitrile O-Rings | AS568-330 | Dash 330 | 70 Durometer | Black (200 / Pkg.)

0.21" CS X 2.1" ID Buna-N Nitrile O-Rings | AS568-330 | Dash 330 | 70 Durometer - Main image
$40.22 $61.87 In stock

Buna-N Nitrile o-rings in AS568-330, 2.1" 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: 330
  • Cross-section: 0.21" (5.33 mm)
  • Inner diameter: 2.1" (53.34 mm)
  • Durometer: 70 Shore A
  • Color: Black
  • Temperature range: -40°F to +250°F (-40°C to +121°C)
  • Measurement type: Imperial
  • Pack quantity: 200 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 (4.6 / 5 · 5 reviews)

Violet ★★★★★

The 0.21" cross-section is noticeably thicker than standard hardware store rings, and they seat perfectly in our pneumatic cylinders. I've used about forty so far with zero leaks, even cycling between freezing and hot oil temps daily.

Julian ★★★★★

Finally found o-rings that actually hold up under constant hot water exposure without getting brittle after a few months. The 0.21" cross-section fits perfectly in my aging irrigation valves, and the 200-pack means I won't need to reorder for years.

Eva T. ★★★★★

Finally got around to using these for a hydraulic fitting repair and the 70 durometer hardness feels exactly right for the pressure. The package of 200 will last me years, which is perfect for the price.