Mutual Screw & Supply

0.21" CS X 2.975" ID HNBR O-Rings | AS568-337 | Dash 337 | 90 Durometer (8 / Pkg.)

0.21" CS X 2.975" ID HNBR O-Rings | AS568-337 | Dash 337 | 90 Durometer (8 / - Main image
$37.83 $53.28 In stock

HNBR o-rings in AS568-337, 2.975" 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: 337
  • Cross-section: 0.21" (5.33 mm)
  • Inner diameter: 2.975" (75.56 mm)
  • Durometer: 90 Shore A
  • Temperature range: -40°F to +300°F (-40°C to +149°C)
  • Measurement type: Imperial
  • Pack quantity: 8 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 (5.0 / 5 · 5 reviews)

Steven ★★★★★

The 90 durometer rating makes these feel reassuringly firm compared to the squishy ones I've pulled off before. Fit the groove perfectly on the first try, and having eight in the pack means spares for the next service.

Henry ★★★★★

Installed these in a hydraulic fitting that sees high heat cycles, and so far no leaks at all. The 2.975" inner diameter fit snugly into the groove without stretching too much.

Leo ★★★★★

The 90 durometer on these is perfect for our hot oil lines—they seat firmly without deforming. The package of eight is a solid value for replacing seals on multiple fittings. Much better than the standard nitrile that kept failing on us.