Mutual Screw & Supply

0.139" CS X 4.984" ID Viton FKM O-Rings | AS568-250 | Dash 250 | X-Ring | 70 Durometer (6 / Pkg.)

0.139" CS X 4.984" ID Viton FKM O-Rings | AS568-250 | Dash 250 | X-Ring | 70 - Main image
$34.18 $56.03 In stock

Viton FKM o-rings in AS568-250, 4.984" inner diameter by 0.139" cross-section. Service range -15°F to +400°F (-26°C to +204°C). Also known as FKM, Fluoroelastomer.

Specifications

  • Product type: O-Ring (X-Ring)
  • Material: Viton FKM
  • AS568 dash size: 250
  • Cross-section: 0.139" (3.53 mm)
  • Inner diameter: 4.984" (126.59 mm)
  • Durometer: 70 Shore A
  • Temperature range: -15°F to +400°F (-26°C to +204°C)
  • Measurement type: Imperial
  • Pack quantity: 6 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)

Christopher O. ★★★★★

Had a small leak on a hydraulic fitting that needed a seal for higher temps, and these O-rings handled the 350°F range perfectly. The 4.984" ID fit snug without any stretching issues, and the Viton FKM material feels durable. Exactly what I needed for that specific application.

Violet M. ★★★★★

Installed these on a hot oil line that hits around 250°F, and the Viton material handles the heat without any sign of softening. The 0.139" cross-section gave a snug fit in the groove.

Charlotte ★★★★★

These fit perfectly on my hydraulic cylinder and the FKM material feels noticeably more durable than the standard Buna-N ones I used before. The 0.139" cross-section is exactly what I needed for a tight seal, great value for a 6-pack.