Red Devil RD Pro Butyl Rubber Sealant 10.1 oz 12-Pack - Watertight

In this review of the RD Pro Butyl Architectural Grade Sealant, the bottom line is clear: this is a practical choice for anyone needing a durable, watertight seal below grade or outdoors. The reviewer finds the product best for projects where long-term flexibility and resistance to temperature swings matter most, since the butyl rubber formula stays flexible after cure and tolerates conditions from -20F to 200F. For contractors, homeowners sealing foundations or plastic tanks, or anyone painting a finished bead, the sealant delivers a reliable, paintable finish without brittle cracking.

Key Features

• Watertight seal: The butyl rubber formula creates a reliable barrier that prevents water intrusion in below grade and outdoor applications.
• Permanently flexible: After full cure the sealant remains flexible in extreme conditions between -20F and 200F, reducing the chance of failure from thermal movement.
• Below grade use: Formulated to be suitable for foundations and basements, it works where moisture exposure and ground movement are concerns.
• Paintable finish: The cured sealant accepts paint so the repair can be blended to match surrounding surfaces for a tidy appearance.
• Made in the USA: The product is manufactured domestically, which may be important to buyers seeking local production.
• Solvent clean up: Tools and excess material require a solvent-based cleaner, which is useful to know for jobsite preparation and cleanup.

Who It's For

The RD Pro Butyl Sealant is aimed at professionals and DIYers who need a tough, long-lasting seal where movement and moisture are expected, such as around foundations, in basements, and for outdoor joints. It is particularly useful when a paintable finish and lasting flexibility are priorities, and when the jobsite can accommodate solvent clean up.

It is less ideal for users who want an ultra-fast surface cure or a nonsticky, fully hard finish immediately after application. Those seeking a silicone-style hard set or water-cleanup convenience may prefer alternative chemistries.

Pros & Cons

Pros

• Provides a dependable, watertight seal for below grade and outdoor work.
• Remains flexible across a wide temperature range, lowering the risk of cracking.
• Paintable after cure so repaired areas can be color-matched.
• Made in the USA and formulated for heavy-duty sealing tasks.

Cons

• Has a noticeably sticky feel and may cling to tools and surfaces until fully cured.
• Requires a solvent-based cleaner for cleanup, which adds handling considerations on site.

Specifications

Product	RD Pro Butyl Architectural Grade Sealant
Volume per tube	10.1 oz.
Pack size	12 pack
Temperature range after cure	-20F to 200F
Cure time	Full cure in 7 to 14 days
Cleanup	Solvent based product required
Origin	Made in the USA

Our Verdict

The RD Pro Butyl Rubber Sealant is a solid choice for jobs that demand a flexible, watertight seal and a paintable finish, especially in below grade and outdoor conditions. While its stickiness and solvent cleanup are practical tradeoffs, its long-term flexibility and temperature tolerance make it good value for contractors and homeowners who need longevity over instant hard cure.

Frequently Asked Questions

Can this sealant be painted?
Yes, the product is paintable after full cure so it can be matched to surrounding surfaces.

Is it suitable for basement foundations?
Yes, the formula is intended for below grade use and works around foundations and in basements.

How do you clean tools and excess?
Cleanup requires a solvent-based product; water will not remove uncured material effectively.