Mutual Screw & Supply

0.21" CS X 4.35" ID Silicone O-Rings | AS568-348 | Dash 348 | FDA Compliant | 70 Durometer | Red (20 / Pkg.)

0.21" CS X 4.35" ID Silicone O-Rings | AS568-348 | Dash 348 | FDA Compliant | - Main image
$34.08 $54.97 In stock

Silicone o-rings in AS568-348, 4.35" 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: 348
  • Cross-section: 0.21" (5.33 mm)
  • Inner diameter: 4.35" (110.49 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: 20 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)

Carter S. ★★★★★

The 0.21" cross-section on these o-rings fits perfectly into the groove on my pressure cooker lid, sealing tight. The high-temperature rating up to 450°F gives me confidence they’ll hold up under steam without degrading.

Thomas O. ★★★★★

I was pleasantly surprised by the heat tolerance; these red o-rings hold up perfectly in my high-temp setup, and the 20-pack gives plenty of spares. Trustworthy feel and fit on the first try.

Harper Q. ★★★★★

The 70 durometer feels just right for my hydraulic repair—firm enough to seal but not brittle. These red rings fit perfectly into the groove I machined, and the FDA compliance gives me peace of mind for food-grade applications. I've already ordered another pack for backup.