Mutual Screw & Supply

0.21" CS X 8.725" ID Silicone O-Rings | AS568-366 | Dash 366 | FDA Compliant | 70 Durometer | Red (10 / Pkg.)

0.21" CS X 8.725" ID Silicone O-Rings | AS568-366 | Dash 366 | FDA Compliant | - Main image
$35.65 $50.93 In stock

Silicone o-rings in AS568-366, 8.725" 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: 366
  • Cross-section: 0.21" (5.33 mm)
  • Inner diameter: 8.725" (221.61 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: 10 per package
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Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

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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 (4.6 / 5 · 5 reviews)

Abigail E. ★★★★★

The red color makes them super easy to spot on the workbench, and the 70 durometer feels just right—firm enough to hold pressure but flexible for seating. I’m using them for a steam line that pushes near the 450°F limit, so the temperature range was the selling point for me.

Benjamin ★★★★★

Exactly the size I needed for a hydraulic seal repair and the bright red color made them easy to spot during assembly. They slid on smoothly and held up well to the hot oil, so I’m ordering another pack for spares.

Timothy ★★★★★

We needed a replacement for a gasket in a hot water line, and these red silicone rings fit perfectly the first time. The 70 durometer feels sturdy enough to hold pressure without being too stiff to install.