Mutual Screw & Supply

0.139" CS X 3.984" ID Silicone O-Rings | AS568-242 | Dash 242 | FDA Compliant | 70 Durometer | Red (50 / Pkg.)

0.139" CS X 3.984" ID Silicone O-Rings | AS568-242 | Dash 242 | FDA Compliant | - Main image
$38.97 $61.86 In stock

Silicone o-rings in AS568-242, 3.984" 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: 242
  • Cross-section: 0.139" (3.53 mm)
  • Inner diameter: 3.984" (101.19 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 (4.8 / 5 · 5 reviews)

Adam B. ★★★★★

The bright red color makes these o-rings easy to spot during assembly, and the 70 durometer silicone seals perfectly on my brewing setup. I've been using them for a few weeks with no issues, and the high temperature rating gives me peace of mind for hot liquids.

Matthew ★★★★★

Installed these on my homebrew kettle's lid and they handled the steam and heat without any issues. The red color makes them easy to spot when fumbling for a spare in my drawer.

Andrew ★★★★★

The 0.139" cross-section on these seals feels more substantial than standard rubber ones, and they slid into my hot water valve grooves without any binding. I've had them installed for a week with no leaks or softening.