Flex Paste Max is a super thick rubberized paste that dries to a strong, flexible rubber coating designed to seal, fill and protect virtually any surface. It starts as a workable paste that you can spread, shape and form, then hardens into a watertight, flexible barrier that won’t shrink or wash away. This all-purpose sealant solves common problems including gaps, cracks and holes in foundations, concrete, walls, roofs, and more—while blocking out air, water and moisture that can cause damage and allow pests to enter.
The paste clings instantly to surfaces and can be applied on dry or wet surfaces, even underwater. Once fully cured, it accepts paint in any color, allowing you to match your existing finishes seamlessly. UV, chemical and mildew resistant properties make it ideal for both indoor and outdoor projects, from foundation and concrete repairs to auto, boat and RV maintenance.
Features and Benefits
- Thick, Moldable Paste: Spreads, shapes and forms to fill large gaps, cracks and holes instantly, with excellent adhesive grip that keeps seals in place.
- Strong, Flexible Rubber Coating: Dries to a strong, flexible rubber coating that won’t shrink or wash away.
- Works Wet or Dry: Can be applied on dry or wet surfaces and even cures underwater, making it versatile for tough repair situations.
- Fully Paintable: Once cured, accepts any color paint for seamless blending with surrounding surfaces and finishes.
- UV and Chemical Resistant: Resists ultraviolet exposure, chemicals and mildew, extending the life of repairs in harsh environments.
- Multi-Purpose Applications: Ideal for foundations, concrete, walls, roofs, RVs, motorhomes, boats, auto repairs, and indoor and outdoor DIY projects.
- American-Made: Manufactured in the USA to reliable performance standards.
Specifications
- Brand: Flex Seal Family of Products
- Model: PFSMAXWHT01
- Color: White
- Weight: 12 lb.
- Container: Tub
- Dimensions: 7.75 x 6.75 x 6.75 inches
- UV Resistant: Yes
- Mildew Resistant: Yes








