Mutual Screw & Supply

0.21" CS X 15.975" ID Buna-N Nitrile O-Rings | AS568-385 | Dash 385 | 70 Durometer | Black (15 / Pkg.)

0.21" CS X 15.975" ID Buna-N Nitrile O-Rings | AS568-385 | Dash 385 | 70 - Main image
$36.62 $57.22 In stock

Buna-N Nitrile o-rings in AS568-385, 15.975" 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: 385
  • Cross-section: 0.21" (5.33 mm)
  • Inner diameter: 15.975" (405.76 mm)
  • Durometer: 70 Shore A
  • Color: Black
  • Temperature range: -40°F to +250°F (-40°C to +121°C)
  • Measurement type: Imperial
  • Pack quantity: 15 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 (4.4 / 5 · 5 reviews)

Joshua S. ★★★★★

Installed these on a large pneumatic cylinder, and the 70 durometer gave just the right amount of squeeze without being too stiff. No leaks so far, and they handled the heat from a nearby steam line just fine.

Lily K. ★★★★★

The 70 durometer hardness is spot on for a firm seal on my pump housing, and the 15.975" ID fit the groove perfectly without any wrestling. I've had them in service for a few weeks now with oil exposure and they haven't swelled or deformed at all.

Isabella O. ★★★★★

Exactly the size I needed to replace a worn gasket on an old hydraulic cylinder. The 70 durometer feels plenty firm for the seal, and the 15-packs means I have spares for the next time.