Lexel Sealant
Technical and safety information
Description
Durabond Lexel Sealant is a co-polyment rubber based sealant, with excellent adhesion to a wide variety of materials, may be applied to wet or dry surfaces, is clearer, stronger, and more easily painted than Silicone. Lexel should not be used in areas of continuous submersion.
Application Range
-20ºC to +50ºC (surface temperature)
Service Range
0ºC to +120ºC.
Cure Time
Tack-free in 30 minutes, cures firm in 2-4 days; complete cure 1-2 in weeks.
Toxicity
No toxicity after cure.
Tensile Properties
@ 50% stretch lexel has a 96% recovery in 1 minute.
@ 100% stretch Lexel has a 96% recovery in 1 minute.
Surface Preparation
Surfaces should be structurally sound and free of dirt, oil, release agents or other residue. Old latex or oil based caulk can be softened for scraping with heat gun. Surfaces below freezing should be free of frost.
Application
Make sure the room is well ventilated if using Lexel indoors. Cut the nozzle at a 45º angle. Puncture the inner seal with a 4" nail. Before caulking, squeeze out a little on a piece of paper to get the feel of the flow. When applying, hold the caulk gun so that the 45º angle cut in the spout is parallel to the surface to be caulked. This is critical. If the gun angle is too high, the nozzle actually scrapes caulk out of the joint as it is supplied and flares it out to the side. If the angle is too low, you get a lumpy bead that skips areas. Pull the cartridge along the joint rather than push it. If you get some irregularity in the bead, dip your finger into clean, soapy water. Let your finger float lightly over the lumps to smooth the bead out.
Clean Up & Cure Time - Lexel is solvent based and cures by solvent evaporation
Lexel can be cleaned from tools and hands using mineral spirits or paint thinner. Lexel devlops a dirt-resistive skin just minutes after application, tack free in 30 minutes and cures firm in 2-4 days. Complete cure in 1-2 weeks. Actual cure depends on bead size and temperature.
Bead Size
Vertical bead size should not exceed 1/2"; horizontal should not exceed 3/4"
Painting Lexel
Allow Lexel to cure 24-48 hours before painting with Latex paints. Allow double cure time in temperatures less than (40ºF). Lexel must cure 30 days before applying oil based paints; otherwise the paint surface will remain tacky for 2 weeks. Actual cure depends on bead size and temperature.
Caution - Flammable
Contains toluene and other petroleum disillates. Keep away from heat and open flame. Use only in well-ventilated area. Keep out of reach of children.
Health & Safety
Uncured Sealant may irritate eyes. In case of contact with eyes immediately flush with water and call a doctor. Use in a well ventilated area. Avoid prolonged contact with skin. KEEP OUT OF REACH OF CHILDREN AND PETS. For more detailed information see separate Health & Safety Data Sheet.