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The Accumetric BOSS 125 is a multi-purpose construction sealant that offers superior, primer-less adhesion to most building materials including vinyl, aluminum, steel, concrete, wood, and glass.
- Seals construction joints in concrete structures, masonry joints, balcony, window, and door perimeter joints, facade and metal cladding joints, aluminum angle joints, curbs, exterior mastic, pinhole repairs, and shower screens.
- Cures upon exposure to moisture in the air to form a strong, flexible seal.
- Can also be applied to flashings, vents, downspouts, gutters, and tiles.
- Can be applied in any season.
- Adheres to damp and non-porous surfaces.
- One-part sealant, no mixing required.
- Tested up to 5000 hours showed no signs of discoloration, chalking, or cracking.
- Superior weather resistance. Unaffected by sun exposure, rain, snow, and extreme temperatures.
- UV protected and will not discolor, stain or streak.
- Remains flexible without cracking or drying out over time.
- Non-slump sealant can be applied in vertical, horizontal, and overhead joints.
- Bonds to Kynar 500 coatings.
- Tack Free Time: ~20 minutes.
- Cure Time: approx 7 days at 77-degrees Fahrenheit.
- Application Temperature: -35 to 140-degrees Fahrenheit.
- Service Temperature: -40 to 200-degrees Fahrenheit.
- Seal Color: Black. (see additional info section below for all available colors).
- Shelf Life: 1 year when stored unopened at or below 90-degrees Fahrenheit.
- VOC compliant.
- Weight: 0.83 lbs.
Accumetric BOSS 125 Multi-Seal Construction Sealant - Black
HOW TO USE
Make sure the joint design is correct. Proper joint design minimizes stresses on the sealant. Typical dimensions of a movement joint should ensure the width of the joint would equal two times the depth of sealant. Minimum depth of sealant in construction joint should be 6mm.
Clean the joint surface on both new and old jobs.
Surfaces must be clean, dry, and sound. Since new material is often covered with a protective film, solvent-wash all surface materials with a wet brush and an oil-free solvent. Ensure that surfaces are dust-free.
Use masking tape where bead lines of exact shapes are required.
Masking tape should be removed immediately after a bead is completed before the skin begins to form.
Apply sealant to dry, clean surfaces.
An air-operated or hand-operated cartridge or sausage gun may be used. Surfaces should be dry before the sealant is applied. Ensure that surfaces to receive the sealant are dust-free. An uncured sealant may be cleaned from tools using commercial solvent.
Tool joint, if necessary, and remove the masking tape.
Tooling should be completed in one continuous stroke. Tool immediately after the sealant is applied and before the skin begins to form. Do not use soap or oil as a tool aid. Remove masking tape immediately after tooling is completed.
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Additional Product Information
BOSS® 125 Multi-Seal® meets performance requirements of TT-S-000230C,
Type II, Class A; ASTM C920, Type S, Grade NS, Class 25, Use NT-non traffic, G-glass, M-mortar, A-aluminum, and O-other; CAN/CGSB 19.13-M87.
CLEAN UP
Uncured sealant can be easily removed
using a solvent such as alcohol or acetone. For an environmental and health friendlier choice use BOSS® Biggie Wipes. If the sealant is cured it must be removed mechanically by cutting and scraping.
LIMITATIONS
Do not use for structural glazing. It is the sole responsibility of the user
to test the adhesion to the substrate for
suitability.
STORAGE AND SHELF LIFE
When stored in the original unopened
containers at or below 90°F (32°C), BOSS® 125 Multi-Seal® Building/Construction Sealant has a shelf life of 12 months from date of shipment. In Countries where high heat and humidity are a factor, special precautions must be taken. Store product in a covered, well-ventilated warehouse and avoid excessive heat conditions. Storage in high heat, high humidity conditions may reduce shelf life by up to 30%. Rotation of stock is an absolute necessity. Cartons should always be stacked upright with the nozzle tip pointed upwards. DO NOT stack cartons on their side. NEVER stack cartons more than 8 high. DO NOT store within 1 meter (4 feet) of the roofline of the warehouse or storage building.
CAUTION
DIRECT CONTACT OF UNCURED SEALANT IRRITATES EYES AND MAY IRRITATE
SKIN. OVEREXPOSURE TO VAPOR MAY IRRITATE EYES, NOSE, AND THROAT. Avoid eye and skin contact. Use with adequate ventilation. Do not handle contact lenses with sealant on hands. IN CASE OF EYE CONTACT, flush eyes with water for 15 minutes. Obtain medical attention. IN CASE OF SKIN CONTACT, remove from skin and flush with water. KEEP OUT OF THE REACH OF CHILDREN.
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