Mutual Screw & Supply

0.21" CS X 17.975" ID Silicone O-Rings | AS568-389 | Dash 389 | FDA Compliant | 70 Durometer | Red (5 / Pkg.)

0.21" CS X 17.975" ID Silicone O-Rings | AS568-389 | Dash 389 | FDA Compliant | - Main image
$36.3 $59.5 In stock

Silicone o-rings in AS568-389, 17.975" inner diameter by 0.21" 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: 389
  • Cross-section: 0.21" (5.33 mm)
  • Inner diameter: 17.975" (456.56 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: 5 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)

Madison ★★★★★

The 0.21" cross-section on these o-rings made them a perfect match for my steam line flange, and the red silicone feels durable yet flexible. I've already used two of the five in the pack, and they sealed tightly with no issues at high heat.

George ★★★★★

These seals fit my large pressure vessel flanges perfectly, and the 70-durometer red silicone feels flexible yet sturdy enough to hold a tight seal. I’m pleased they’re FDA compliant since I use them with food-grade equipment.

Leo Y. ★★★★★

The high temperature rating is exactly what I needed for my steam line repair. These are far more durable than the standard black ones I tried before.