Mutual Screw & Supply

0.21" CS X 5.975" ID Silicone O-Rings | AS568-355 | Dash 355 | FDA Compliant | 70 Durometer | Red (18 / Pkg.)

0.21" CS X 5.975" ID Silicone O-Rings | AS568-355 | Dash 355 | FDA Compliant | - Main image
$37.44 $53.48 In stock

Silicone o-rings in AS568-355, 5.975" 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: 355
  • Cross-section: 0.21" (5.33 mm)
  • Inner diameter: 5.975" (151.76 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: 18 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 (4.8 / 5 · 5 reviews)

Avery C. ★★★★★

I needed a reliable replacement for a high-heat application, and these o-rings fit perfectly while handling up to 450°F without any issues. The 70 durometer feels sturdy enough for a tight seal, and the 5.975" inner diameter was spot on for my setup.

Ava N. ★★★★★

The FDA compliance is what sold me, but the -80°F to +450°F range means I can use these in both my cryo test rig and hot oil bath without swapping seals. Red color makes them easy to spot against dark metal, too.

Chloe ★★★★★

I needed a seal for a high-heat vacuum application, and these o-rings fit perfectly with their 0.21 cross-section and temperature rating up to 450°F. The red color makes them easy to spot during assembly, and they’ve held up well so far without any leaks.