Mutual Screw & Supply

0.139" CS X 4.859" ID Silicone O-Rings | AS568-249 | Dash 249 | FDA Compliant | 70 Durometer | Red (24 / Pkg.)

0.139" CS X 4.859" ID Silicone O-Rings | AS568-249 | Dash 249 | FDA Compliant | - Main image
$36.77 $54.07 In stock

Silicone o-rings in AS568-249, 4.859" inner diameter by 0.139" cross-section. Service range -80°F to +450°F (-62°C to +232°C). Also known as VMQ, Silastic.

Specifications

  • Product type: O-Ring
  • Material: Silicone
  • AS568 dash size: 249
  • Cross-section: 0.139" (3.53 mm)
  • Inner diameter: 4.859" (123.42 mm)
  • Durometer: 70 Shore A
  • Color: Red
  • Temperature range: -80°F to +450°F (-62°C to +232°C)
  • Measurement type: Imperial
  • Compliance: FDA 21 CFR 177.2600
  • Pack quantity: 24 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 (4.2 / 5 · 5 reviews)

Claire ★★★★★

I needed rings that could handle both hot rinses and cold transfers, and the -80°F to +450°F range on these silicone ones covers everything perfectly without stiffening up. The 70 durometer gives just enough flexibility for a tight seal on my pressure vessel.

Kevin ★★★★★

Finally, o-rings that actually fit my brewing application properly, the 4.859" ID is spot on. The red silicone is surprisingly easy to spot against stainless steel, which helps during assembly. These will definitely outlast the black Buna-N ones I've been using.

Scarlett E. ★★★★☆

The red color makes them easy to spot on the shelf, and the 70 durometer feels just right for my jamming needs. Only wish the package had a few more rings for the price.