Mutual Screw & Supply

0.139" CS X 5.859" ID Viton FKM O-Rings | AS568-257 | Dash 257 | Metal Detectable | 75 Durometer (4 / Pkg.)

0.139" CS X 5.859" ID Viton FKM O-Rings | AS568-257 | Dash 257 | Metal - Main image
$38.22 $60.67 In stock

Viton FKM o-rings in AS568-257, 5.859" 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: 257
  • Cross-section: 0.139" (3.53 mm)
  • Inner diameter: 5.859" (148.82 mm)
  • Durometer: 75 Shore A
  • Temperature range: -15°F to +400°F (-26°C to +204°C)
  • Measurement type: Imperial
  • Metal detectable: Yes
  • Pack quantity: 4 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 (4.6 / 5 · 5 reviews)

Elizabeth Z. ★★★★★

Finally found o-rings that hold up in high-temp applications without degrading. The 400°F service range is perfect for my engine rebuild, and they fit the AS568-257 spec exactly.

Elizabeth S. ★★★★★

These o-rings handled the high-temp steam cleaning cycle at our plant without any softening. The metal-detectable feature gives us an extra layer of safety in our food processing line.

Claire ★★★★★

The dash 257 size fit our 6-inch pipe flange perfectly, and the Viton’s 400°F rating gives me confidence for the hot oil service we run. I’ve inspected all four rings and the metal-detectable feature is a nice safety bonus for food plant duty. These feel dense and solid at 75 durometer, exactly what