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Seal Bond® MSL Self-leveling Sealant

1 of 12 products in this brand
Seal Bond® MSL Self-leveling Sealant is a professional grade one-part, self-leveling, sealant/coating formulated for low movement joint and coating applications requiring quick cure and excellent weatherability including high UV resistance. SB MSL reacts with moisture to form a strong yet flexible all-weather seal. SB MSL is tough, elastic and waterproof. SB MSL can be used on damp surfaces; however pooled water and surface frost should be removed before application. Installation in high humidity conditions is acceptable.

Product Type: 1K (1 component) Sealant

Compatible Substrates & Surfaces: Aluminum, Ceramic, Concrete, Fiberglass, Glass, Metal, Stainless Steel, Steel, Wood

Application Method: Gun

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Knowde Enhanced TDS

Identification & Functionality

Chemistry
Polyether

Features & Benefits

Labeling Claims
Features
  • 100% solids - no shrinkage
  • Fast skin over - low dirt pickup
  • Safe to Use - solvent & Isocyanate free
  • Ultra-low VOC’s, 35.2 g/L
  • May contribute to LEED V4 EQ Material Resource Credit 4.1 - Adhesives and Sealants
  • Bonds to most common building substrates
  • Remains flexible to absorb expansion and contraction
High Performance Durability
  • Does not dry or become brittle
  • Water resistant
  • Permanent elastomeric bond

Applications & Uses

Application Method
Substrate Compatibility
  • Aluminum
  • Coated Metal
  • Glass
  • Wood
  • EPS Foam
  • Stainless Steel
  • Cold Rolled Steel
  • Concrete
  • Block and Brick
  • Ceramics
  • Fiberglass
  • Many plastics
Ease of Installation
  • Single component high solids formula.
  • Easily gunnable between 40°F and 100°F.
  • Cures rapidly to reach optimum strength within 7 - 14 days, optimum cure 21 days.
  • SB MSL can be installed on damp surfaces which is defined as when no moisture is transferred to the skin when the substrate is touched.
Product Application

Application

Remove all dirt, oil, loose paint, frost and other contamination from all working surfaces. Maintain SB MSL at room temperature before applying to ensure easy gunning and tooling. Test and evaluate to ensure adequate adhesion.

Concrete

Prior to application remove any residual contamination by mechanical abrasion, sand blasting or power washing. On green concrete, remove all release agents and loose concrete. Dry all visible and/or standing water. Install an appropriate backer rod to avoid three-point bonding.

Metal

Prepare all metal to ensure maximum adhesion. Remove all rust, scale and residue using a wire brush. Remove films, loose or inappropriate coatings and oils with an appropriate solvent such as alcohol. Seal Bond recommends that coated substrates be tested for proper adhesion prior to starting a project to determine suitability for use.

Wood

Wood should be clean, sound and dry prior to sealant application. Allow treated wood to weather for six months prior to application. Remove all coatings and paint to ensure proper adhesion. SB MSL is not recommended for use on fire retardant lumber.

Priming

n most applications SB MSL will not require a primer. However, certain substrates may require a primer to ensure a long lasting bond and weatherproof seal. It is the applicator’s responsibility to determine whether or not a primer is needed in their specific application.

Clean-up

Clean tools with mild solvent such as mineral spirits.

Properties

Typical Properties
ValueUnitsTest Method / Conditions
VOC35.2g/LASTM C1250
Skinover Time (50% RH, 70°F)15.0minASTM C679
Density13.69lb/gal
Hardness48.0ASTM D676 (Shore A)
Peel Strength (Aluminum)14.57ASTM D903
Peel Strength (Mortar)14.33ASTM D903
Peel Strength (Glass)14.33pliASTM D903
Peel Strength (Pine)11.01ASTM D903
Peel Strength (PVC)13.41ASTM D903
Peel Strength (Cold Rolled Steel)12.09ASTM D903
Tensile168.0psiASTM D412-06
Elongation at Break184.0%ASTM D412-06
Shrinkage0.0%
Service Temperature-40 to 200°F
Viscosity (1 rpm)80000.0cpsASTM D2196-10
Viscosity (2 rpm)63000.0cpsASTM D2196-10
Viscosity (10 rpm)45400.0cpsASTM D2196-10

Regulatory & Compliance

Standards & Compliance
  • May contribute to LEED V4 EQ Material Resource Credit 4.1 - Adhesives and Sealants
  • ASTM C-920, Type S, Grade P, Class 25, use T, M, A, G and O
  • Federal Specification TT-S-00230-C Type 1, Class A
  • Corps of Engineers CRD-C-541, Type I, Class A
  • Conforms to OTC Rule for Sealants and Caulks
  • Meets requirements of California Regs: CARB, BAAQMD and SCAQMD
  • Conforms to USDA Requirements for Non-food Contact

Technical Details & Test Data

Test Data

SB MSL typical values represent data from multiple batches. Values will be refreshed, as necessary, upon data collection from additional campaigns and long-term variability discernment.

Safety & Health

Precautionary Statements
  • Do not use until all instructions and safety precautions have been read and understood.
  • Wear protective gloves, protective clothing and eye protection.
  • Wash contaminated clothing before reuse.
  • Contaminated work clothing should not be allowed out of the workplace.
  • If on skin - Wash exposed body areas with soap and water.
  • If in eyes - Rinse with water, remove contact lenses and continue rinsing.
  • If exposed or concerned get medical advise/attention.

Packaging & Availability

Packaging & Availability
  • 10.1 oz. (300 ml) cartridges - 24 tubes/case, 45 cases/pallet
  • 2 liter pouches - 4 pouches/case, 40 cases/pallet
  • Available in colors, white, black and gray.

Storage & Handling

Material Storage and Disposal
  • Store securely between 60°F - 80°F in unopened container.
  • Recommended shelf life is 12 months from date of manufacture on bottom of tube.
  • Keep tube tightly sealed.
  • Dispose of contents/container in accordance with Local/Regional/National/International Regulations.
Shelf Life

The shelf life is 12 months for an unopened container from the date of manufacture.