Permatex Ultra Copper RTV Gasket Maker 2-pack ready for durable automotive gasket sealing.
Permatex Ultra Copper RTV Gasket Maker 2-pack ready for durable automotive gasket sealing.

Permatex 81878 Ultra Copper RTV Gasket Maker (2 Pack) – High-Temp Silicone Sealant

Overview Meet a dependable gasket solution built for automotive and equipment work: Permatex 81878 Ultra Copper RTV...
Vendor: Permatex
Availability: In stock
£33.63
£33.63
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Permatex Ultra Copper RTV Gasket Maker 2-pack ready for durable automotive gasket sealing.

Permatex 81878 Ultra Copper RTV Gasket Maker (2 Pack) – High-Temp Silicone Sealant

£33.63
Permatex Ultra Copper RTV Gasket Maker 2-pack ready for durable automotive gasket sealing.

Permatex 81878 Ultra Copper RTV Gasket Maker (2 Pack) – High-Temp Silicone Sealant

£33.63
Description
Description
x

Overview

Meet a dependable gasket solution built for automotive and equipment work: Permatex 81878 Ultra Copper RTV Silicone Gasket Maker in a convenient 2-pack. Each tube contains 3 ounces of copper-colored sealant designed to form a durable, flexible gasket when applied between metal surfaces. This high-temp silicone compound is crafted to seal joints where oil, coolant, and air may meet, offering a robust, user-friendly option for both hobbyists and professionals.

Value and convenience

  • Two tubes in the box provide value and ready-to-use coverage for multiple tasks
  • Copper color aids visual inspection during bead application and seating checks

Key benefits at a glance

  • High-temperature tolerance suitable for engine bays and heat-prone joints
  • Copper-infused formulation for easy visibility and accurate gasket alignment
  • Remains flexible after cure, helping to maintain a reliable seal over time
  • Designed to resist common automotive fluids, contributing to long-term performance

Practical uses and real-life scenarios

Use Permatex Ultra Copper RTV in applications such as valve covers, oil pans, thermostat housings, water pumps, and other gasket interfaces. The sealant can fill gaps and uneven surfaces, reducing the potential for leaks while you assemble or reassemble components. Its quick setup lets you move from assembly to testing with confidence, and the copper hue helps you monitor bead width and coverage in tight spaces.

Tips for best results

Prepare surfaces by cleaning and lightly roughening metal where the gasket will seat. Apply a continuous bead, align correctly, and allow the recommended cure time before pressurizing or testing the system. Store the tubes in a cool, dry place when not in use to preserve consistency and performance.

FAQ

Q: What is Permatex Ultra Copper RTV Gasket Maker used for?

A: It's a high-temperature silicone sealant designed to form gaskets on automotive engines and equipment, delivering a flexible, durable seal.

Q: Does this kit include multiple tubes?

A: Yes, the 2-pack provides two 3 oz tubes, offering value and ready-to-go coverage for several projects.

Shipping & Return
Shipping & Return
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Returns Policy

You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.

Shipping

We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

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