Mutual Screw & Supply

Silicone O-Rings | AS568-439 | Dash 439 | FDA Compliant | 70 Durometer | Red (10 / Pkg.)

Silicone O-Rings | AS568-439 | Dash 439 | FDA Compliant | 70 Durometer | Red - Main image
$35.61 $58.38 In stock

Silicone o-rings in AS568-439. 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: 439
  • 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: 10 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 (4.8 / 5 · 5 reviews)

Emily G. ★★★★★

The high-temp silicone works perfectly for sealing my autoclave door, handling the steam without degrading. I've already ordered another pack for backup.

Evelyn ★★★★★

Used these to replace old seals in a hot water valve at work, and they handled the 200°F steam without any issues. The red color makes them easy to spot during maintenance, and the -80°F to +450°F range gives me confidence for future cold-weather applications.

Ryan M. ★★★★★

Had to swap out some old rubber gaskets in a high-heat application, and these red silicone rings handled the -80°F to +450°F range without any issues. The 70 durometer felt just right—firm enough to seal tight but not brittle to install.