Mutual Screw & Supply

0.139" CS X 0.296" ID Silicone O-Rings | AS568-203 | Dash 203 | FDA Compliant | 70 Durometer | Red (300 / Pkg.)

0.139" CS X 0.296" ID Silicone O-Rings | AS568-203 | Dash 203 | FDA Compliant | - Main image
$39.29 $53.1 In stock

Silicone o-rings in AS568-203, 0.296" 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: 203
  • Cross-section: 0.139" (3.53 mm)
  • Inner diameter: 0.296" (7.52 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: 300 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 (4.8 / 5 · 5 reviews)

David ★★★★★

I needed o-rings that could survive a deep freezer in the lab, and these silicone ones handled -80°F without getting brittle. The 70 durometer feels just right for a snug seal without being impossible to install.

James N. ★★★★★

These seals handled the steam autoclave cycles without any visible wear, which is exactly what I needed at -80°F to +450°F. The red color made them easy to spot on the bench, and having 300 in the pack means I'll be set for a while.

Henry ★★★★★

I've been using these o-rings in a hot water application up to 200°F, and the silicone holds up perfectly without any swelling. The 70 durometer feels just right for a snug seal without being too stiff to install.