Mutual Screw & Supply

0.139" CS X 4.984" ID Viton FKM O-Rings | AS568-250 | Dash 250 | 75 Durometer | Black (16 / Pkg.)

0.139" CS X 4.984" ID Viton FKM O-Rings | AS568-250 | Dash 250 | 75 Durometer | - Main image
$34.08 $54.97 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
  • Material: Viton FKM
  • AS568 dash size: 250
  • Cross-section: 0.139" (3.53 mm)
  • Inner diameter: 4.984" (126.59 mm)
  • Durometer: 75 Shore A
  • Color: Black
  • Temperature range: -15°F to +400°F (-26°C to +204°C)
  • Measurement type: Imperial
  • Pack quantity: 16 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 (4.8 / 5 · 5 reviews)

Timothy ★★★★★

My old Viton seals kept hardening up near my kiln, but these 4.984" ID rings have held up perfectly at high temps for weeks now. The -15°F to +400°F range covers exactly what I need for my hot oil system.

Mia ★★★★★

The 75 durometer hardness feels right for a snug fit, and the 4.984" ID matched my flange perfectly. These held up after a week of constant heat cycling near the 400°F limit without any signs of cracking.

Henry ★★★★★

These handled the high heat in my engine bay without any softening or swelling. The 75 durometer feels just right for a snug seal without being too hard to work into the groove.