Ledar MS500 High Modulus Elastic Sealant & Adhesive
Ledar MS500 High Modulus Elastic Sealant & Adhesive
Available in stock
Specifications
Specifications
MS500 is a single-component elastic sealant and adhesive based on advanced MS Polymer technology. It reacts with moisture in the air to cure into a durable, elastic rubber-like material.
The curing speed and open time of MS500 are influenced by ambient temperature and humidity. Higher temperature and humidity significantly accelerate curing, while lower temperature and humidity slow the process.
With its high modulus, excellent elasticity, and strong adhesion, MS500 is suitable for both elastic sealing and general elastic bonding across a wide range of substrates in industrial and manufacturing applications.

Key Features & Benefits
- High Modulus & Excellent Elastic Recovery
Provides strong yet flexible bonding and sealing performance. - Fast Curing Speed
Curing depth exceeds 4.5 mm within 24 hours under normal conditions, improving production efficiency. - Outstanding UV & Weather Resistance
Suitable for long-term outdoor use with a service life over 20 years. - Paintable & Sandable After Curing
Compatible with most paints and coatings for seamless finishing. - Low Shrinkage
Maintains original bead shape after curing, ensuring clean appearance. - Eco-Friendly & Safe
Solvent-free, free of toluene, formaldehyde, PVC and other harmful substances.
Typical Applications
- Elastic sealing of joints and gaps in various constructions
- Elastic bonding of stainless steel, aluminum, copper, PVC, coated metals and other substrates
- General-purpose elastic bonding where high strength is required
Industries & Use Scenarios
- Vehicle Bodies, Refrigeration Units & Containers
- Sealing of installation gaps to accelerate factory production processes.
Metal Panels, Plastic Components & FRP Bonding
Elastic bonding of side panels, roof panels, skins and structural components.
Industrial Assembly
Bonding of small parts made of metal, plastic, wood and composite materials
Technical Data
- Base Material: MS Polymer
- Appearance: Paste, uniform color
- Colors: White / Grey / Black
- Density: Approx. 1.5 g/cm³ (23°C, 50% RH)
- Sag Resistance: <1 mm (Vertical)
- Skin Formation Time: Approx. 10 minutes
- Curing Speed:
1 day: ~4.0 mm
7 days: >10 mm - Shore A Hardness: Approx. 52
- Tensile Strength: >3.0 MPa
- Elongation at Break: Approx. 230%
- Shear Strength: >2.0 MPa
- Failure Mode: 100% Cohesive Failure (Stainless Steel / Stainless Steel)
- Shrinkage: ≤ 1.5%
- Service Temperature:
Continuous: -40°C to +90°C
Short-term: up to 180°C (< 20 minutes) - UV Resistance: No cracking, hardening or discoloration after 6 weeks artificial UV aging
Packaging Type
- 570 ml Sausage Pack
- 290 ml Cartridge
Color
- White
- Grey
- Black
Storage Life
- 12 months (Original sealed packaging)
Usage & Storage Notes
- Ensure bonding surfaces are clean, dry and free of oil or dust before application.
- Remove rust or oxidation from metal surfaces prior to bonding.
- For large-area bonding where inner curing may be limited, use with a compatible curing accelerator.
- Complete assembly before skin formation to ensure optimal adhesion.
- Recommended application temperature: +15°C to +40°C.
- Store in a cool, dry place at 10°C – 25°C.

