BoatLIFE LifeSeal Polyurethane/Silicone Sealant is a one part, fast curing, low odor, high adhesion, non-sag compound. LifeSeal is excellent for sealing decks to hulls, underwater thru hull fittings, vinyl ports, windshield setting glaze and the bedding of marine hardware. It retains excellent adhesion and elasticity under all weather conditions.
Note: Select 1/12 gallon size for a standard caulking cartridge.
- LIMITATIONS 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".
INSTALLATION
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.
Technical Information
- Maximum Movement Cap. In % 75%
- Practical Joint Design Recommended 3X Movement
- Life Expectancy In Years: Mild Conditions 20+, Severe Conditions 15+
- Joint Requirements
- Minimum Width 1/8"
- Ideal Width 1/4"
- Minimum Depth 1/4"
- Maximum Width 1"
- Depth Range 1/4" to 1/2"
- TYPICAL PROPERTIES After 7 Days at 77 F and 50% Relative Humidity
- Tensile Strength 290 psi
- Elongation 350%
- Specific Gravity .99
- Lap Shear 240 psi
- Tear Strength 30 psi
- Flow (inches) Nil
- Weathering No Change in hardness
- Compression Set 3.75%
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Reviews for BoatLIFE Lifeseal
USED ON A BROKEN SEAM. LEFT A HORRID MESS AND DIDN'T HARDEN AT ALL!
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I've already posted a review but want to share an excellent tip from an experienced glazier friend. 1. Tape off both sides of the joint to be filled. 2. Slightly overfill the joint with sealant. 3. Using the bottom of the caulking tube (preferably an empty one)simply push the bottom end of the tube forward through the joint, collecting the excess sealant into the inside bottom of the tube. The joint will instantly be finished tooling - and look professional. 4.Immediately (and carefully) remove all masking from around the joint, then clean up any overspills on the surface around the joint. 5.The job s complete!
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I am installing new polycarbonate cabin windows on my old sailboat and after much research settled on Life Seal to bed them in. I was pleased to find that J.D. carries the product because my orders always arrive from them quickly and with no surprises. Life Seal is the one product I found, designed specifically to work with the expansion and contraction of polycarbonate, combined with high adhesion capabilities. It works. I bought a tube for each window, also a can of the Boat Life Solvent. The black sealant that I used can be extremely messy and the solvent was a lifesaver. Plan your job carefully. The working time of Life Seal is about 10 minutes and all joint tooling must be complete in that time.
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Used it to glue a bilge pump to floor of bilge.Seems to be doing the job.
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I used Lifeseal for water tanks, Solar deck vents (was able to remove a plastic deck vent that had been in place for about 20 years without destroying it, and the rubbery sealing surface showed absolutely no signs of water intrusion) and wished I had used it in other places where the products couldn't handle the sun and/or I wanted to remove the hardware for replacement or repair. I just reinstalled my chainplates and can't think of a better product to insure water doesn't get behind them and allow the stainless steel corrode.
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When rebedding chain plates, new Life Seal will adhere to the old Life Seal so you don't have to clean off all the old when removing and resealing. Tools and fairs easily and quickly with finger. Sticks to stainless and fiberglass with moderate strength, but still removable. The only product I use to bed deck hardware anymore. I use 5200 on screws and thru hulls, Life seal everywhere else. Caulks showers well and doesn't peel off like pure silicone does.
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I attempted to do the same thing as the previous reviewer, re-bed a piece of lexan in a metal frame hatch. I had the exact same problems as the previous reviewer: a gooey, non-curing mess. I would avoid this product.
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Used a 10oz cartridge to seal a Lexan lens to a metal hatch frame. Still a gooey mess after 2 weeks, and when it rained it left black streaks on the decks. Awful job to clean it all off to re-do the job. My guess is that the curing agent separated from the sealant while on the store shelf. Poor shelf life. Don't gamble with this.
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