Mutual Screw & Supply

0.139" CS X 3.609" ID Silicone O-Rings | AS568-239 | Dash 239 | FDA Compliant | 70 Durometer | Red (50 / Pkg.)

0.139" CS X 3.609" ID Silicone O-Rings | AS568-239 | Dash 239 | FDA Compliant | - Main image
$39.74 $59.32 In stock

Silicone o-rings in AS568-239, 3.609" inner diameter by 0.139" 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: 239
  • Cross-section: 0.139" (3.53 mm)
  • Inner diameter: 3.609" (91.67 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: 50 per package
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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 (4.2 / 5 · 5 reviews)

Christopher ★★★★★

I needed a high-temp seal for my autoclave and these 70-durometer red O-rings handle the heat without any softening. The 3.609" inner diameter matched my valve perfectly, and they’re noticeably more flexible than the black ones I used before.

Ellie L. ★★★★★

These red silicone o-rings fit my pressure cooker lid perfectly, and the 70 durometer feels just right for a tight seal without being too stiff. They handled boiling water without any issue.

Elizabeth U. ★★★★☆

The temperature range is the reason I picked these, and so far they've held up great in a hot water line that gets well past boiling. Red color makes them easy to spot during disassembly, which is a nice bonus. Only wish the package had a few extra spares since I always drop one.