Mutual Screw & Supply

0.21" CS X 2.975" ID Viton FKM O-Rings | AS568-337 | Dash 337 | 90 Durometer (25 / Pkg.)

0.21" CS X 2.975" ID Viton FKM O-Rings | AS568-337 | Dash 337 | 90 Durometer - Main image
$34.22 $57.03 In stock

Viton FKM o-rings in AS568-337, 2.975" inner diameter by 0.21" cross-section. Service range -15°F to +400°F (-26°C to +204°C). Also known as FKM, Fluoroelastomer.

Specifications

  • Product type: O-Ring
  • Material: Viton FKM
  • AS568 dash size: 337
  • Cross-section: 0.21" (5.33 mm)
  • Inner diameter: 2.975" (75.56 mm)
  • Durometer: 90 Shore A
  • Temperature range: -15°F to +400°F (-26°C to +204°C)
  • Measurement type: Imperial
  • Pack quantity: 25 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 (4.8 / 5 · 5 reviews)

Violet Y. ★★★★★

The 90 durometer hardness makes these feel substantial and they seated perfectly in my groove without any twisting. I've torqued the assembly to full pressure and held it at 350°F with zero weeping so far, which is exactly what I needed from a fluoroelastomer seal.

Joshua O. ★★★★★

I had a leaking hydraulic fitting that these o-rings sealed perfectly, even at the upper end of the 400°F range. The 90 durometer hardness feels solid and they didn't deform after a long cycle.

Henry B. ★★★★★

I've been running these at about 350°F in a hot oil application for three weeks now, and the 90 durometer hardness is holding up way better than the cheaper Buna-N ones I used to burn through. The 2.975" ID seated snugly in my groove without any stretching to make it fit.