Mutual Screw & Supply

0.139" CS X 5.734" ID Silicone O-Rings | AS568-256 | Dash 256 | FDA Compliant | 70 Durometer | Red (22 / Pkg.)

0.139" CS X 5.734" ID Silicone O-Rings | AS568-256 | Dash 256 | FDA Compliant | - Main image
$38.89 $52.56 In stock

Silicone o-rings in AS568-256, 5.734" 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: 256
  • Cross-section: 0.139" (3.53 mm)
  • Inner diameter: 5.734" (145.64 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: 22 per package
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Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

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Standard Shipping · United States: $0.00

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 ★★★★★

I replaced the standard black o-rings on my espresso machine with these red silicone ones, and they fit the 5.734" inner diameter perfectly. The -80°F to +450°F temperature range gives me confidence for the hot steam cycles.

Sebastian ★★★★★

I needed a reliable seal for a hot steam application and the 70-durometer silicone handled the 400°F exposure without any issues. The fit on my 5.734" groove was exactly as specified.

Owen Y. ★★★★★

The temperature range on these is what sold me—handled a 400°F oven test without any warping or loss of seal. The red color made them easy to spot during assembly, and the 70 durometer feels just right for a snug fit.