Mutual Screw & Supply

0.21" CS X 3.225" ID Viton FKM O-Rings | AS568-339 | Dash 339 | 75 Durometer | Black (14 / Pkg.)

0.21" CS X 3.225" ID Viton FKM O-Rings | AS568-339 | Dash 339 | 75 Durometer | - Main image
$33.14 $53.45 In stock

Viton FKM o-rings in AS568-339, 3.225" 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: 339
  • Cross-section: 0.21" (5.33 mm)
  • Inner diameter: 3.225" (81.91 mm)
  • Durometer: 75 Shore A
  • Color: Black
  • Temperature range: -15°F to +400°F (-26°C to +204°C)
  • Measurement type: Imperial
  • Pack quantity: 14 per package
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Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

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)

Jacob ★★★★★

These are noticeably firmer than the cheap ones I pulled off, the 75 durometer feels like it’ll actually hold its shape under heat. I’ve got them seating snugly in a flange that hits 300°F and no leaks so far after a week of cycling.

Lily I. ★★★★★

I needed o-rings that could handle high heat near my compressor, and these Viton ones have held up perfectly through several hot cycles already. The 0.21" cross-section seals tight without any deformation.

Mia G. ★★★★★

These o-rings fit my application perfectly, and the 75 durometer feels just right for the seal I needed. The high-temperature Viton material handles the 350°F environment without any issue. I've already ordered another pack for backup.