Leak Stopper Rubber Flexx Sealant Spray – Black

Leak Stopper Rubber Flexx Sealant Spray – Black is an elastomeric spray sealant designed for fast exterior repairs where leaks, cracks, and moisture protection are needed.

This black spray sealant helps stop leaks, seal problem areas, and protect surfaces around roofs, chimneys, skylights, gutters, pipes, and similar exterior applications. Its aerosol format makes it useful for quick spray-on repairs and hard-to-reach areas.

Rubber Flexx Sealant Spray dries to the touch in approximately 10 minutes and can be handled in 4–6 hours under normal conditions. It is intended for exterior repair use and should be applied to clean, dry surfaces for best results.

Key Features

• Black elastomeric spray sealant
• Stops leaks, seals, and protects
• Easy spray application
• Useful for roofs, chimneys, skylights, gutters, and pipes
• Good durability and abrasion resistance
• Heat resistance up to 300°F
• Dries to touch in approximately 10 minutes
• Handle time approximately 4–6 hours
• Petroleum asphalt resin system

Recommended Uses

• Roofs
• Chimneys
• Skylights
• Gutters
• Pipes
• Exterior leak repairs
• Hard-to-reach sealing areas

Product Details

• Brand: Gardner
• Product Line: Leak Stopper
• Product Type: Rubber Flexx Sealant Spray
• Product Code: 0316-GA
• Size: 18 oz aerosol can
• Color: Black
• Specific Gravity: 0.80
• Solids Content: Approximately 60%
• VOC Content: Approximately 39%
• Application Temperature: 50°F – 100°F
• Storage Temperature: 40°F – 90°F
• Dry to Touch: 10 minutes
• Handle Time: 4–6 hours
• Heat Resistance: 300°F
• Shelf Life: 2 years
• Case Pack: 12 containers per case

Application Notes

• Clean and dry the surface thoroughly before spraying.
• Remove wax, grease, dirt, and loose material before application.
• Use drop cloth or newspaper to protect surrounding areas from spray mist.
• For best results, use when the can is between 70°F and 90°F.
• Shake can vigorously for at least one minute after the rattle is heard.
• Hold the can 12 to 18 inches from the surface while spraying.
• Use short, steady, even strokes during application.
• Remove overspray immediately with mineral spirits or kerosene.
• Do not use in drinking water or food systems.
• Do not use on EPDM, Hypalon, PVC, single-ply, or synthetic roofs.
• Test a small section first if surface compatibility is uncertain.

Technical Product Sheet