Mutual Screw & Supply

0.21" CS X 2.85" ID Buna-N Nitrile O-Rings | AS568-336 | Dash 336 | 90 Durometer (100 / Pkg.)

0.21" CS X 2.85" ID Buna-N Nitrile O-Rings | AS568-336 | Dash 336 | 90 - Main image
$37.2 $51.66 In stock

Buna-N Nitrile o-rings in AS568-336, 2.85" 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: 336
  • Cross-section: 0.21" (5.33 mm)
  • Inner diameter: 2.85" (72.39 mm)
  • Durometer: 90 Shore A
  • Temperature range: -40°F to +250°F (-40°C to +121°C)
  • Measurement type: Imperial
  • Pack quantity: 100 per package
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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 (4.8 / 5 · 5 reviews)

Julian ★★★★★

The 90 durometer rubber feels noticeably firmer than standard o-rings, which gives me confidence it'll hold up under higher pressure. I used these to rebuild a pneumatic fitting on my compressor, and the -40°F rating is a bonus for my unheated garage. Exactly what I needed for a durable seal.

Adam ★★★★★

These fit perfectly on my hydraulic cylinder gland, and the 90 durometer handles the pressure without deforming. I've already used half the pack on different fittings and they all seal tight.

Aurora ★★★★★

The 90 durometer hardness on these o-rings feels noticeably sturdier than what I've used before, and they seated perfectly in my pneumatic cylinder without any leaks. Having the whole pack of 100 means I've got spares for the next few maintenance sessions, which is exactly what I needed.