Quickly and effectively seal leaks in just minutes!

Our FlexHold Mighty Sealer Paste is a next-level sealant designed to repair and seal cracks, gaps, and leaks across various materials. This water-based formula is easy to apply, paintable and transforms surfaces into a strong, waterproof barrier for long-lasting protection.

Tag a friend who could really use this game-changing sealer! 💪✨

FlexHold Sealer Paste creates a durable rubberized coating that seals cracks, fills minor holes, and repairs damaged surfaces, offering flexible yet strong protection against moisture, corrosion, and rust. Its self-seeping formula reaches deep into tight spots, sealing leaks without the need for disassembly. Perfectly suited for low-pressure leaks in hoses, oil pans, transmission pans, fluid reservoirs, plastic and metal pipes, fittings, and more!

Seal & Restore Damaged Surfaces

With its superior bonding strength and powerful leak-proof adhesive formula, FlexHold is ideal for quickly repairing wet surfaces with a long-lasting, permanent seal. It works without the need for liquid additives that can cause swelling or damage to internal seals, and it’s resistant to common shop fluids for reliable, durable performance.

Our Satisfied Customer Reviews:

“FlexHold Mighty Sealer Paste saved my RV! After battling constant leaks, this paste sealed every crack and crevice effortlessly. The texture made it easy to spread, and it dried into a super durable, weatherproof barrier. We’ve driven through rainstorms and blazing sun, and the seal still looks flawless. Honestly, it’s a must-have for anyone with an RV or outdoor repairs!” - Hector Wilson, Utah

“Absolutely impressed with this FlexHold Sealer Paste!! No fancy tools or plumbing knowledge needed—just spread the paste, let it set, and done. It’s held up to regular water flow and even some cleaning chemicals without any issues. It dries clear too, so it doesn’t look messy under the sink. Highly recommended for quick and effective plumbing fixes!” - Clifford Raker, California

FlexHold Mighty Sealer Paste VS. Other Brands 

More Customer Reviews:

“I was ready to rip out my old balcony tiles until I found FlexHold Mighty Sealer Paste. It sealed up all the cracks and completely waterproofed the surface. What impressed me most is how flexible the seal remains – no cracking even with temperature changes. Plus, it improved the appearance of the entire floor. Easy to apply and saved me tons of money!” - Gino Reeves, Washington

“I was tired of constantly repainting my ceiling due to water leaks and mildew stains. FlexHold Mighty Sealer Paste provided a permanent fix! It sealed cracks, blocked moisture, and gave my ceiling a smooth, durable finish. Best of all, it’s paintable, so I could match the rest of the room easily. I wish I found this product sooner — works like magic!” - Erick Wilkerson, New York

Why Choose FlexHold Mighty Sealer Paste?

✅Instant Leak Repair:

This industrial-grade formula penetrates even the smallest micro-fractures, pores, and cracks with ease. It forms a durable, rubberized coating that effectively seals leaks, fills minor holes, and restores broken surfaces — providing long-lasting protection and strength.

✅Ultimate Protection:

Creates a durable, flexible, and waterproof seal that effectively blocks moisture, prevents rust, and resists corrosion — even in tough-to-reach spots and tricky surfaces.

✅100% Waterproof, UV & Weather-Resistant:

This versatile, water-based sealant works on both painted and unpainted surfaces. It forms a durable, weather-proof barrier that withstands rain, sun, and extreme conditions, effortlessly adhering to metal, wood, rubber, paper, fiber, plastic, and more.

✅Strong Leakproof Adhesion:

FlexHold Mighty Sealer Paste grips tightly onto surfaces like a magnet, forming a secure, long-lasting bond. Its high-strength formula is ideal for repairing even wet surfaces quickly, delivering a durable, permanent seal that stands the test of time.

✅Safe & Non-Toxic:

Formulated to dry clear without yellowing, this sealant is odorless and free from harmful chemicals—safe for use indoors and outdoors without polluting the environment.

✅Versatile Use:

Specially engineered to tackle low-pressure leaks in hoses, oil pans, differentials, transmission pans, and fluid reservoirs. It also works seamlessly on plastic, PVC, metal pipes, joints, and a variety of household and industrial surfaces.

SPECIFICATIONS:

• Capacity : 100g/300g

PACKAGE INCLUDES:

• 1 x FlexHold Mighty Sealer Paste (100g with brush)
• 1 x FlexHold Mighty Sealer Paste (300g with brush)