Mutual Screw & Supply

0.139" CS X 0.359" ID Silicone O-Rings | AS568-204 | Dash 204 | FDA Compliant | 70 Durometer | Red (300 / Pkg.)

0.139" CS X 0.359" ID Silicone O-Rings | AS568-204 | Dash 204 | FDA Compliant | - Main image
$39.87 $56.16 In stock

Silicone o-rings in AS568-204, 0.359" inner diameter by 0.139" 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: 204
  • Cross-section: 0.139" (3.53 mm)
  • Inner diameter: 0.359" (9.12 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: 300 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 (4.0 / 5 · 5 reviews)

Elizabeth ★★★★★

I swapped out some old seals on a coffee machine that runs near 200°F and these red silicone rings haven't shown any wear. The 70 durometer feels just right—stiff enough to hold a seal but not so hard I had to fight to install them.

Madison J. ★★★★★

These o-rings fit perfectly for a hot beverage brewer I'm repairing. The red color makes them easy to spot during assembly, and they feel robust for the rated temperature range.

Richard F. ★★★★☆

I needed a batch of these for a high-temp sealing project and the 70 durometer felt just right when I seated them. They held up fine during a quick test at 400°F with no visible degradation. Only nitpick is that the red color makes them a bit harder to spot against similar equipment.