Mutual Screw & Supply

0.21" CS X 0.974" ID Viton FKM O-Rings | AS568-318 | Dash 318 | 90 Durometer (60 / Pkg.)

0.21" CS X 0.974" ID Viton FKM O-Rings | AS568-318 | Dash 318 | 90 Durometer - Main image
$40.25 $53.66 In stock

Viton FKM o-rings in AS568-318, 0.974" inner diameter by 0.21" 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: 318
  • Cross-section: 0.21" (5.33 mm)
  • Inner diameter: 0.974" (24.74 mm)
  • Durometer: 90 Shore A
  • Temperature range: -15°F to +400°F (-26°C to +204°C)
  • Measurement type: Imperial
  • Pack quantity: 60 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)

Charlotte M. ★★★★★

I needed these for a high-temp application around a steam valve, and the 400°F rating gave me confidence they'd hold up. The 60-piece pack is great value for that size, and the cross-section feels robust when installed.

Emily P. ★★★★★

The 90 durometer hardness is perfect for a high-pressure seal I needed to replace—it held up during a full afternoon of testing at 350°F. The -15°F to 400°F range gives me real confidence for both my steam and chilled water lines. These 60 pieces will last me years at this rate.

Lily N. ★★★★★

These o-rings fit my hydraulic cylinder perfectly; the 90 durometer is noticeably stiffer than the standard ones I've used before. The pack of 60 should last me for a while.