Mutual Screw & Supply

0.139" CS X 3.859" ID Viton FKM O-Rings | AS568-241 | Dash 241 | 90 Durometer (30 / Pkg.)

0.139" CS X 3.859" ID Viton FKM O-Rings | AS568-241 | Dash 241 | 90 Durometer - Main image
$36.42 $51.29 In stock

Viton FKM o-rings in AS568-241, 3.859" 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: 241
  • Cross-section: 0.139" (3.53 mm)
  • Inner diameter: 3.859" (98.02 mm)
  • Durometer: 90 Shore A
  • Temperature range: -15°F to +400°F (-26°C to +204°C)
  • Measurement type: Imperial
  • Pack quantity: 30 per package
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Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

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)

Christopher M. ★★★★★

The 90 durometer is noticeably stiffer than my standard Buna-N rings, which is exactly what I needed for a high-pressure hydraulic fitting. They seated perfectly in the groove without any twisting, and the package of 30 will last me through several rebuilds.

Carter O. ★★★★★

These handled the 400°F heat cycle in my compressor rebuild kit without any swelling. For the price, getting 30 precision-cut FKM o-rings is a solid deal for industrial repairs.

Chloe R. ★★★★★

The inner diameter measured exactly to spec on all 30, which made fitting them onto our flanges a breeze. They've held up through repeated steam cycles right up to the 400°F limit without any hardening or cracking.