LifeSeal is not recommended for use on ferro cement hulls where porous substrates permit water infiltration to bond interface. LifeSeal should not be applied to boat building materials that may bleed oil or solvents. These include, but are not limited to, impregnated wood or oil soaked materials. The sealant should not be applied in totally confined spaces as it requires atmospheric moisture to cure. If painting is required, paint prior to applying sealant, or the system should be pre-tested with the specific paint to be used. Generally painting over a rubber surface will not be successful as the film of paint will not stretch with the expansion of the rubber and adhesion of the ozone and temperature extremes. Its tensile strength, elongation, hardness, and adhesion do not change with age or weather. Because of its memory properties LifeSeal returns to its original shape and dimensions even after long periods of tensile or compression deformation. The sealant stays flexible indefinitely. Cured sealant will not harden with cold (-80 F) or soften with heat ( 400 F ) and is virtually unaffected by time or weather. When using in joints, it is recommended that a bond breaker of cotton be used to prevent the material from bonding to the bottom of the joint. Use of other types of material may result in staining of the surface and/or sealant.
JOINT DIMENSIONS LifeSeal is capable of withstanding extreme movement; however, we strongly recommend that joints be designed three times greater in width than the anticipated movement to help compensate for adverse field conditions. The joint width should not be less than 1/8". Joint depth should be a minimum of 1/4" to a maximum of 1/2".
PREPARATORY WORK The sealant bonding surfaces should be sound, clean, dry, and free of contamination such as release agents, water repellent treatment or other surface contaminants. Where adverse conditions are suspected, sanding is advisable. Clean surfaces to be caulked with Life Calk Solvent & Cleaner or Release.
METHOD OF APPLICATION LifeSeal can be applied directly from cartridges or bulk pails.
COMPOSITION & MATERIALS LifeSeal is a one-component, neutral emulsion of polyurethane and silicone polymers combined with proper crosslinking agents to form a unique sealant ready for use as supplied. Its ease of extrudability is unsurpassed and unaffected by extremes of temperature. Its "skin-over" time is 20 minutes or less, minimizing dirt pick-up. It cures rapidly to a firm rubber on contact with moisture from the atmosphere. Before material is cured, excess may be cleaned up with soap and water. Once cured, water will not affect the sealant. Under normal conditions LifeSeal will cure to a depth of 1/4" within 24 to 36 hours depending on temperature and humidity. LifeSeal is unsurpassed for long lasting performance in active joints with up to 75% total movement.
PACKAGING LifeSeal is packaged in 310 ml disposable cartridges fitting an ordinary caulking gun.
PACKAGE STABILITY 12 MONTHS at 75 F, & 50% relative humidity. Longer at a lower temperature and/or humidity.
COLORS LifeSeal is available in white, black, clear, and aluminum; other colors on special order only.
APPLICABLE STANDARDS LifeSeal exceeds the requirements of the Federal Specifications TT-S-001543A (COM-NBS) Type Non-Sag Class A. LifeSeal is impervious to the effects of sunlight, rain, or snow. The sealant can be applied as low as 10 F, provided the surfaces are clean, dry, and frost free.