Mutual Screw & Supply

0.21" CS X 1.85" ID Buna-N Nitrile O-Rings | AS568-328 | Dash 328 | 50 Durometer (55 / Pkg.)

0.21" CS X 1.85" ID Buna-N Nitrile O-Rings | AS568-328 | Dash 328 | 50 - Main image
$33.13 $53.44 In stock

Buna-N Nitrile o-rings in AS568-328, 1.85" 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: 328
  • Cross-section: 0.21" (5.33 mm)
  • Inner diameter: 1.85" (46.99 mm)
  • Durometer: 50 Shore A
  • Temperature range: -40°F to +250°F (-40°C to +121°C)
  • Measurement type: Imperial
  • Pack quantity: 55 per package
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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)

George G. ★★★★★

The 50-durometer hardness makes these feel almost pliable, which was exactly what I needed for a snug fit on a tricky housing. Installed without any splitting, and knowing they're rated to 250°F gives me peace of mind in my hot oil system.

Daniel Y. ★★★★★

I needed a reliable seal for a hydraulic oil application, and these o-rings fit the 1.85" ID perfectly with no leaks. The -40°F low-temp rating is a plus for my cold storage setup.

Emily V. ★★★★★

The 50-durometer hardness is perfect for my water pump rebuild—grips tight without being too stiff. Fit the housing groove exactly as the 1.85" ID spec promised.