Mutual Screw & Supply

0.21" CS X 4.725" ID Buna-N Nitrile O-Rings | AS568-350 | Dash 350 | 70 Durometer | Black (50 / Pkg.)

0.21" CS X 4.725" ID Buna-N Nitrile O-Rings | AS568-350 | Dash 350 | 70 - Main image
$39.15 $52.91 In stock

Buna-N Nitrile o-rings in AS568-350, 4.725" 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: 350
  • Cross-section: 0.21" (5.33 mm)
  • Inner diameter: 4.725" (120.01 mm)
  • Durometer: 70 Shore A
  • Color: Black
  • Temperature range: -40°F to +250°F (-40°C to +121°C)
  • Measurement type: Imperial
  • Pack quantity: 50 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 (4.8 / 5 · 5 reviews)

Ella ★★★★★

The 0.21" cross-section is exactly right for the hydraulic cylinder I was repairing, and the 70 durometer feels properly firm. These fit snugly without any forcing, and the package of 50 will last me through several projects.

Elizabeth A. ★★★★★

I used these to rebuild a small pneumatic cylinder on my lathe, and the -.21" cross-section was a perfect fit for the gland depth. They seated easily without pinching and held pressure right away.

Madison V. ★★★★★

Installed a set of these in my hydraulic manifold yesterday, and the 0.21" cross-section seated perfectly with no binding. Sealed up on the first test at 100 psi with zero leaks.