Mutual Screw & Supply

0.139" CS X 5.359" ID Silicone O-Rings | AS568-253 | Dash 253 | FDA Compliant | 70 Durometer | Red (22 / Pkg.)

0.139" CS X 5.359" ID Silicone O-Rings | AS568-253 | Dash 253 | FDA Compliant | - Main image
$37.78 $51.05 In stock

Silicone o-rings in AS568-253, 5.359" 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: 253
  • Cross-section: 0.139" (3.53 mm)
  • Inner diameter: 5.359" (136.12 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: 22 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)

Ruby ★★★★★

The high-temperature rating is exactly what I needed for a sealing application near a heat source. These fit perfectly and the material feels durable and well-made.

Madison ★★★★★

Finally tracked down these exact o-rings for my home brewing rig and the 70 durometer feels just right for the hot water seals. The FDA compliance gives me peace of mind, and they fit my 5-inch flanges perfectly.

Daniel P. ★★★★★

The red color makes them easy to spot during disassembly, and the 70 durometer feels just right for a snug seal without needing excessive force. I’ve used them in a hot water setup up to 200°F and they’ve held up without any softening or distortion.