Red Devil PRO 100% Silicone Weather-Resistant Sealant - Industrial

In this review of the Red Devil PRO 100% Silicone Sealant, the bottom line is straightforward: this is a dependable, weather-resistant RTV sealant best suited for maintenance professionals and serious DIYers who need a long-lasting, flexible seal on non-porous surfaces. The reviewer found its chief advantage to be durable adhesion across a wide range of substrates combined with superior flexibility that prevents cracking or shrinking over time. If a reliable external seal for windows, doors, tubs or countertops matters most, this product delivers.

Key Features

• 100% RTV Silicone: Provides a high-performance, all-weather seal formulated specifically for external window and door applications where long-term durability matters.
• Excellent Adhesion: Bonds to most metals, painted surfaces, plastics, glass, ceramic tile, porcelain, marble and fiberglass for versatile use around the home or shop.
• Will Not Crack, Shrink or Peel: Superior flexibility and vibration resistance help the seal remain intact under temperature and movement stress.
• Low Odor and VOC Compliant: The low odor formula is easier to work with indoors and meets USDA recognition and NSF listing for appropriate applications.
• Wide Application Range: Suitable for window and door frames, siding, showers and tubs, gutters, plumbing fixtures and countertops, making it a multi-purpose sealant.
• 50 Year Warranty: Backed by a long-term warranty that reflects confidence in the product's longevity and performance.

Who It's For

This sealant is aimed at installers, building maintenance crews and experienced DIYers who need a long-lasting, weather-resistant silicone for exterior and wet-area sealing. Its compatibility with many non-porous surfaces makes it useful for projects that require strong adhesion and flexibility under movement.

It is less well suited for porous wood that is oily or untreated substrates that need a specialized primer, and homeowners seeking a variety pack of colors or a faster tack time may want to evaluate options with different cure profiles. Those who require a scent-free product for enclosed spaces should still note the low odor but not zero scent.

Pros & Cons

Pros

• Excellent adhesion to a broad range of non-porous materials, reducing the need for different sealants.
• Resists cracking, peeling and shrinking, so seals tend to last for years under normal conditions.
• Low odor, VOC compliant formulation that is USDA recognized and NSF listed for suitable uses.
• Includes a cap for resealing unused product, which helps reduce waste between jobs.

Cons

• Some customers report mixed opinions on drying time, so full cure may vary by environment and can be slower than some alternatives.
• Color availability received mixed feedback, with a few users finding it hard to match specific shades.

Specifications

Product Type	100% RTV silicone sealant
Formulation	Weather-resistant, low odor, VOC compliant
Tube Size	10.1 oz tube
Pack Quantity	12-pack
Recommended Uses	Window/door frames, siding, showers, tubs, gutters, sinks, tiles
Adhesion	Metals, painted surfaces, plastics, glass, ceramic, porcelain, marble, fiberglass
Warranty	50 year warranty

Our Verdict

The Red Devil PRO 100% Silicone Sealant is a solid choice for anyone needing a reliable, flexible and long-lasting seal on non-porous surfaces. It represents good value for maintenance work and exterior applications because of its broad adhesion, resistance to cracking and the long warranty. Professionals and committed DIYers looking for a dependable all-weather seal should consider this product.

Frequently Asked Questions

Can this sealant be used in showers and tubs?
Yes, it is formulated for wet-area applications like showers, tubs and sinks and bonds to ceramic tile and porcelain.

How long does it take to cure?
Cure time varies with temperature and humidity; customers report full cure in roughly 24 hours in typical conditions, though surface dust-free handling can be faster.

Will it stick to painted surfaces and metals?
Yes, the product has excellent adhesion to painted surfaces and most metals as well as plastics and glass.