Mutual Screw & Supply

0.21" CS X 2.85" ID HNBR O-Rings | AS568-336 | Dash 336 | 80 Durometer (12 / Pkg.)

0.21" CS X 2.85" ID HNBR O-Rings | AS568-336 | Dash 336 | 80 Durometer (12 / - Main image
$37.61 $54.51 In stock

HNBR o-rings in AS568-336, 2.85" inner diameter by 0.21" cross-section. Service range -40°F to +300°F (-40°C to +149°C). Also known as HSN, Highly Saturated Nitrile.

Specifications

  • Product type: O-Ring
  • Material: HNBR
  • AS568 dash size: 336
  • Cross-section: 0.21" (5.33 mm)
  • Inner diameter: 2.85" (72.39 mm)
  • Durometer: 80 Shore A
  • Temperature range: -40°F to +300°F (-40°C to +149°C)
  • Measurement type: Imperial
  • Pack quantity: 12 per package
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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 (4.2 / 5 · 5 reviews)

Adam U. ★★★★★

The high temp rating on these HNBR rings is perfect for my compressor rebuild, they fit the 2.85” bore precisely with no binding. Sealed up tight on the first try.

Grace ★★★★★

The 0.21" cross-section on these o-rings fit my application exactly, and the HNBR material feels more durable than standard Buna. I've used them in a hydraulic repair where temperatures spike, and after 60 hours there's zero sign of hardening or cracking.

Henry ★★★★★

Finally, a pack of twelve that actually seals properly on our hydraulic assembly. The 2.85" ID sits snug with no slop, and the 80 durometer HNBR handles the oil bath temps without swelling.