Mutual Screw & Supply

0.21" CS X 1.099" ID Buna-N Nitrile O-Rings | AS568-320 | Dash 320 | 70 Durometer | Black (300 / Pkg.)

0.21" CS X 1.099" ID Buna-N Nitrile O-Rings | AS568-320 | Dash 320 | 70 - Main image
$35.09 $56.6 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: 70 Shore A
  • Color: Black
  • Temperature range: -40°F to +250°F (-40°C to +121°C)
  • Measurement type: Imperial
  • Pack quantity: 300 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 (5.0 / 5 · 5 reviews)

Nicholas ★★★★★

I needed a reliable seal for a pneumatic cylinder rebuild, and these AS568-320s are exactly the right size. The 70 durometer buna-n material feels tough and should handle the vibration just fine.

Emily V. ★★★★★

These o-rings fit perfectly in my hydraulic cylinder rebuilds; the 70 durometer feels nice and firm without being brittle. The -40°F low-temp rating gives me confidence for outdoor gear that sits through winter.

Hazel F. ★★★★★

I’ve been through a lot of o-ring packs for my hydraulic fittings, and this one’s 70 durometer hardness is spot on for a snug seal without being a pain to stretch into place. The 1.099 inch inner diameter fit my grooves perfectly, and having 300 in the pack means I won’t be scrambling for a spare fo