Mutual Screw & Supply

0.139" CS X 6.359" ID Viton FKM O-Rings | AS568-261 | Dash 261 | 75 Durometer | Brown (12 / Pkg.)

0.139" CS X 6.359" ID Viton FKM O-Rings | AS568-261 | Dash 261 | 75 Durometer | - Main image
$34.66 $55.01 In stock

Viton FKM o-rings in AS568-261, 6.359" 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
  • Material: Viton FKM
  • AS568 dash size: 261
  • Cross-section: 0.139" (3.53 mm)
  • Inner diameter: 6.359" (161.52 mm)
  • Durometer: 75 Shore A
  • Color: Brown
  • Temperature range: -15°F to +400°F (-26°C to +204°C)
  • Measurement type: Imperial
  • Pack quantity: 12 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 (4.6 / 5 · 5 reviews)

Miles K. ★★★★★

Replaced the worn seals on a hydraulic line rated for high heat, and the 75 durometer hardness feels plenty sturdy for the job. They slid on without any stretching or tearing, and the brown color makes them easy to spot during assembly. Exactly what I needed for the -15°F to 400°F range.

George D. ★★★★★

Finally an o-ring that actually handles the heat without melting into a gooey mess. The 400°F rating is no joke—I've had these on a steam line for weeks and they're holding their shape perfectly. The brown Viton material feels dense and solid, exactly what I needed for this high-temp application.

Thomas ★★★★★

These fit perfectly on my industrial valve cover and the brown color makes them easy to spot during maintenance. They sealed nicely right away with no leaks, exactly what I needed for a high-heat application.