Mutual Screw & Supply

0.21" CS X 4.225" ID Silicone O-Rings | AS568-347 | Dash 347 | FDA Compliant | 70 Durometer | Red (20 / Pkg.)

0.21" CS X 4.225" ID Silicone O-Rings | AS568-347 | Dash 347 | FDA Compliant | - Main image
$36.39 $54.32 In stock

Silicone o-rings in AS568-347, 4.225" 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: 347
  • Cross-section: 0.21" (5.33 mm)
  • Inner diameter: 4.225" (107.31 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 (4.8 / 5 · 5 reviews)

Mia ★★★★★

Used these to replace the old gaskets on my pressure cooker and the 4.225" inner diameter fit perfectly with no stretching or leaks. The red color makes them easy to spot when I'm digging through my parts drawer, and the 70 durometer feels firm but still flexible enough to seat properly.

Ella ★★★★★

The temperature range is exactly what I needed for a hot-water valve rebuild — these have held up perfectly at 200°F without any softening. They seated firmly and the red color makes them easy to spot during installation.

Jason X. ★★★★★

These 70-durometer rings seated perfectly in my steam kettle lid, and they handled 350°F cycles without any noticeable hardening. The red silicone makes them easy to spot during inspection.