Mutual Screw & Supply

0.139" CS X 3.734" ID Silicone O-Rings | AS568-240 | Dash 240 | FDA Compliant | 70 Durometer | Red (50 / Pkg.)

0.139" CS X 3.734" ID Silicone O-Rings | AS568-240 | Dash 240 | FDA Compliant | - Main image
$44.53 $60.17 In stock

Silicone o-rings in AS568-240, 3.734" 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: 240
  • Cross-section: 0.139" (3.53 mm)
  • Inner diameter: 3.734" (94.84 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 (5.0 / 5 · 5 reviews)

Sebastian O. ★★★★★

The temperature range is the big selling point for me—these handled steam service without softening, which my old Buna-N rings couldn't do. Red color makes them easy to spot during inspection too.

Adam U. ★★★★★

Fit these o-rings to a standard 3-734" groove and the seal on my homebrew kettle is perfect—no leaks even during a vigorous boil. The 70 durometer silicone feels durable yet flexible enough for repeated assembly.

Miles H. ★★★★★

The red color makes them easy to spot in my toolbox, and the FDA compliance was a must for my brewing rig. They seated perfectly on my first try with no leaks.