Mutual Screw & Supply

0.21" CS X 4.475" ID Silicone O-Rings | AS568-349 | Dash 349 | FDA Compliant | 70 Durometer | Red (18 / Pkg.)

0.21" CS X 4.475" ID Silicone O-Rings | AS568-349 | Dash 349 | FDA Compliant | - Main image
$31.04 $50.06 In stock

Silicone o-rings in AS568-349, 4.475" 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: 349
  • Cross-section: 0.21" (5.33 mm)
  • Inner diameter: 4.475" (113.66 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 (5.0 / 5 · 5 reviews)

Victoria L. ★★★★★

The 0.21" cross-section on these rings fits perfectly into the groove I machined, and the bright red color makes them easy to spot during assembly. I've used them in a hot water application around 200°F without any sign of swelling or hardening.

Victoria Q. ★★★★★

The high temperature rating was the main reason I grabbed these for a hot water application, and they’ve held up perfectly so far. They’re noticeably softer and more pliable than the Buna-N ones I’ve used before, which made installation a breeze.

Kevin D. ★★★★★

Bought these to replace a gasket on a pressure canner, and the 70 durometer silicone is firm enough to hold a seal without being a pain to compress. The red color makes them easy to spot against the metal lid, and the pack of 18 gives plenty of spares for future projects.