Mutual Screw & Supply

0.21" CS X 20.475" ID Silicone O-Rings | AS568-394 | Dash 394 | FDA Compliant | 70 Durometer | Red (4 / Pkg.)

0.21" CS X 20.475" ID Silicone O-Rings | AS568-394 | Dash 394 | FDA Compliant | - Main image
$35.16 $53.28 In stock

Silicone o-rings in AS568-394, 20.475" 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: 394
  • Cross-section: 0.21" (5.33 mm)
  • Inner diameter: 20.475" (520.07 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: 4 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)

Andrew ★★★★★

The 20.475-inch inner diameter fit my drum lid perfectly, and the red color makes it easy to spot during maintenance. I've torqued these down twice already and the 70 durometer silicone holds its shape without squishing out.

Hazel ★★★★★

The high-temp rating is exactly what I needed for my oven door seal, and the red color makes them easy to spot during inspection. They fit snugly without any stretching issues.

Evelyn C. ★★★★★

These o-rings fit my brewing kettle’s lid perfectly, and the high-temp silicone handles boiling water without any issue. The 70 durometer feels just right—firm enough to seal, but not too stiff to install.