Mutual Screw & Supply

0.21" CS X 0.974" ID Silicone O-Rings | AS568-318 | Dash 318 | FDA Compliant | 70 Durometer | Red (80 / Pkg.)

0.21" CS X 0.974" ID Silicone O-Rings | AS568-318 | Dash 318 | FDA Compliant | - Main image
$35.86 $50.51 In stock

Silicone o-rings in AS568-318, 0.974" 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: 318
  • Cross-section: 0.21" (5.33 mm)
  • Inner diameter: 0.974" (24.74 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: 80 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 (5.0 / 5 · 5 reviews)

Scarlett F. ★★★★★

I needed a reliable seal for a hot water application, and these silicone o-rings handle up to 450°F without any issues. The 70 durometer feels firm but not brittle, and the red color made installation a breeze since I could see them clearly in the tight space. Great fit for my project.

Sebastian O. ★★★★★

The red color makes them easy to spot during disassembly, and the 70 durometer feels just right for a snug seal without being a pain to install. I've used them in a steam line around 300°F and they haven't hardened or cracked after a month. For the price and the 80-count pack, this is a solid buy.

Emily ★★★★★

Needed some high-temp o-rings for a hot water filtration setup, and these silicone ones have held up perfectly at 200°F without any warping. The red color makes them easy to spot during assembly, and the 70 durometer feels exactly right for a snug seal without being impossible to install.