Mutual Screw & Supply

0.21" CS X 3.225" ID Silicone O-Rings | AS568-339 | Dash 339 | FDA Compliant | 70 Durometer | Red (22 / Pkg.)

0.21" CS X 3.225" ID Silicone O-Rings | AS568-339 | Dash 339 | FDA Compliant | - Main image
$39.74 $53.7 In stock

Silicone o-rings in AS568-339, 3.225" inner diameter by 0.21" cross-section. Service range -80°F to +450°F (-62°C to +232°C). Also known as VMQ, Silastic.

Specifications

  • Product type: O-Ring
  • Material: Silicone
  • AS568 dash size: 339
  • Cross-section: 0.21" (5.33 mm)
  • Inner diameter: 3.225" (81.91 mm)
  • Durometer: 70 Shore A
  • Color: Red
  • Temperature range: -80°F to +450°F (-62°C to +232°C)
  • Measurement type: Imperial
  • Compliance: FDA 21 CFR 177.2600
  • Pack quantity: 22 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 (4.4 / 5 · 5 reviews)

Sebastian ★★★★★

The red color makes them easy to spot during maintenance, and the 70 durometer feels perfectly firm for my pump seal replacement. They fit the 3.225" ID groove like a glove.

Kevin Q. ★★★★★

After struggling to find a high-temp o-ring that wouldn't crack in my sous vide setup, these silicone ones handle the constant steam with zero issues. The 0.21" cross-section made for a much tighter, more reliable seal than the thinner rubber ones I'd tried.

Kevin ★★★★★

I needed a 3.225" ID o-ring that could handle high heat, and these silicone ones are working perfectly in my smoker. The 70 durometer feels flexible yet sturdy, and the red color makes them easy to spot.