Mutual Screw & Supply

0.21" CS X 1.099" ID Buna-N Nitrile O-Rings | AS568-320 | Dash 320 | 90 Durometer (250 / Pkg.)

0.21" CS X 1.099" ID Buna-N Nitrile O-Rings | AS568-320 | Dash 320 | 90 - Main image
$39.45 $54.04 In stock

Buna-N Nitrile o-rings in AS568-320, 1.099" 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: 320
  • Cross-section: 0.21" (5.33 mm)
  • Inner diameter: 1.099" (27.91 mm)
  • Durometer: 90 Shore A
  • Temperature range: -40°F to +250°F (-40°C to +121°C)
  • Measurement type: Imperial
  • Pack quantity: 250 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)

Grace ★★★★★

Ordered these for a stubborn hydraulic cylinder on my tractor, and the 90 durometer material was stiff enough to hold pressure where softer ones failed. The 250-pack means I've got spares for the next few repairs, and they fit the groove perfectly.

Sebastian ★★★★★

I was replacing some old seals in a hydraulic cylinder, and these AS568-320 o-rings fit the 1.099" ID groove perfectly. The 90 durometer feels nice and firm, no squishing out under pressure—definitely holding up better than the original ones.

Alexander ★★★★★

The 90 durometer rating on these o-rings is exactly what I needed for a high-pressure seal, and the pack of 250 will last through several projects. They fit the groove perfectly and the Buna-N material feels sturdy.