Mutual Screw & Supply

0.139" CS X 3.984" ID Viton FKM O-Rings | AS568-242 | Dash 242 | FDA Compliant | 60 Durometer | White (8 / Pkg.)

0.139" CS X 3.984" ID Viton FKM O-Rings | AS568-242 | Dash 242 | FDA Compliant - Main image
$32.53 $50.04 In stock

Viton FKM o-rings in AS568-242, 3.984" 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: 242
  • Cross-section: 0.139" (3.53 mm)
  • Inner diameter: 3.984" (101.19 mm)
  • Durometer: 60 Shore A
  • Color: White
  • Temperature range: -15°F to +400°F (-26°C to +204°C)
  • Measurement type: Imperial
  • Compliance: FDA 21 CFR 177.2600
  • Pack quantity: 8 per package
Before you pay

Check the method and total at checkout.

When it ships

Allow for processing time as well as the journey to you.

Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

View policy
If you need a refund

Keep your order number and contact the store to start.

Please contact us for the refund processing timeframe before returning an item.

View policy
Delivery costs

Review the cost for your destination and chosen service.

Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

View policy
Returning an item

Check the return conditions before sending anything back.

United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

View policy

Customer Reviews (4.6 / 5 · 5 reviews)

Benjamin I. ★★★★★

The high-temp rating was the reason I picked these, and the fact they're FDA compliant sealed it for my application. They seated snugly into the groove without any deformation, and the 60 durometer feels just right for a secure seal.

Olivia J. ★★★★★

These white Viton rings feel noticeably firmer than the standard black ones I've used before—the 60 durometer is a nice balance. Installed one on a hot water valve rated near 200°F and it seated perfectly without any distortion. Exactly what I needed for a food-grade application.

Aurora J. ★★★★★

Swapped out the old rubber gaskets on our hot water line for these Viton FKM rings, and the 400°F rating gives me real peace of mind. The white 60 durometer material is noticeably firmer than the cheap ones I used before, and they seated perfectly without any tweaking.