Mutual Screw & Supply

0.21" CS X 2.975" ID Viton FKM O-Rings | AS568-337 | Dash 337 | X-Ring | 70 Durometer (8 / Pkg.)

0.21" CS X 2.975" ID Viton FKM O-Rings | AS568-337 | Dash 337 | X-Ring | 70 - Main image
$43.65 $58.98 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 (X-Ring)
  • Material: Viton FKM
  • AS568 dash size: 337
  • Cross-section: 0.21" (5.33 mm)
  • Inner diameter: 2.975" (75.56 mm)
  • Durometer: 70 Shore A
  • Temperature range: -15°F to +400°F (-26°C to +204°C)
  • Measurement type: Imperial
  • Pack quantity: 8 per package
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Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

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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)

Victoria R. ★★★★★

Needed a high-temp seal for my compressor rebuild, and these Viton FKM rings handled the 350°F tests without any visible degradation. The 70 durometer feels just right for a snug fit.

Samuel O. ★★★★★

These fit perfectly on a pressure relief valve I rebuilt. The Viton material should handle the heat without any issues.

Kevin Z. ★★★★★

I needed a high-temp seal for a steam valve at work, and these Viton rings are holding up perfectly at 350°F so far. The 70 durometer feels just right—firm enough to seal but still easy to install. Exactly what I was hoping for.