ACTFLEX MS PRO
moisture-curing modified polyurethane joint sealant
One-component, moisture-curing modified polyurethane joint sealant offering superior adhesion, flexibility, and UV resistance for construction and waterproofing joints.
ACTFLEX MS PRO is a one-component, moisture-curing modified polyurethane adhesive joint sealant formulated for high performance across construction and waterproofing applications. It offers excellent adhesion to a wide range of substrates including concrete, masonry, metals, glass, tiles, and timber.
It is solvent-free, isocyanate-free, and non-staining, ensuring clean finishes with no bubbling or shrinkage. Compliant with ASTM C920 Class 50 and ISO 11600 (F Class 25 LM), ACTFLEX MS PRO is suitable for both horizontal and vertical joints.
specs
Technical Specifications.
Waterproof Time:
After full cure (24–48 hours, depending on temperature and humidity).
Coverage:
Approx. 10–12 linear meters per 600 mL sausage (10 mm x 10 mm bead).
Usable period after opening:
Single-component; ready to use directly from cartridge.
Touch dry time minimum:
Tack Free: 15 minutes @ 25°C
Cure Speed: 2.0 mm/day @ 25°C
Full Cure: 48–72 hours (depending on depth)
Vapor Pressure @ 25oC:
Low vapor permeability; forms an impermeable, elastic film.
Application Temperature:
+5°C to +35°C
Shelf Life:
10 months (unopened, stored between 10–25°C, <50% RH).
Membrane
Classification:
Class 3 Elastomeric Sealant
Colour:
Black, grey or white
Tack Free Time:
15 minutes @ 25°C
Recoat Time:
After full cure (24–48 hours)
Elongation at Break:
350% @ break (GB/T 528)
Recommended
Thickness:
Recommended joint width: 5–35 mm (2:1 width-to-depth ratio).
Chemical
Resistant:
Good resistance to mild acids, alkalis, and UV radiation.
Full Cure:
2 mm per day (approx. 48–72 hours for 10 mm depth)
Chemical Base:
Modified polyurethane (MS polymer).
Cure Mechanism:
Moisture-curing.
Tear Propagation
Resistance:
≥6 N/mm (GB/T 529).
Service
Temperature:
−10°C to +65°C
Solid Contents:
Non-volatile content: 99%
Bond Strength:
Excellent adhesion to most substrates without primer.
Density:
1.63g/cc
Compressive
Strength:
Flow:
Acceptance of Cyclic Movement:
Sag/slump: ≤1 mm, 20 mm profile at 25°C
Dimensional Stability:
Sag/slump: ≤1 mm, 20 mm profile at 25°C
Control Elongation at Break:
Sag/slump: ≤1 mm, 20 mm profile at 25°C
Control Tensile Strength:
Sag/slump: ≤1 mm, 20 mm profile at 25°C
Water Immersion Elongation at Break:
Sag/slump: ≤1 mm, 20 mm profile at 25°C
Water Immersion Tensile Strength:
Sag/slump: ≤1 mm, 20 mm profile at 25°C
Detergent Immersion Elongation at Break:
Sag/slump: ≤1 mm, 20 mm profile at 25°C
Detergent Immersion Tensile Strength:
Sag/slump: ≤1 mm, 20 mm profile at 25°C
Heat Aging Elongation at Break:
Sag/slump: ≤1 mm, 20 mm profile at 25°C
Heat Aging Tensile Strength:
Sag/slump: ≤1 mm, 20 mm profile at 25°C
Field Seam Strength:
Sag/slump: ≤1 mm, 20 mm profile at 25°C
Temperature Resistance:
Water Vapour Transmission
Sag/slump: ≤1 mm, 20 mm profile at 25°C
Water Vapour Transmission:
Sag/slump: ≤1 mm, 20 mm profile at 25°C
Application Method:
Sag/slump: ≤1 mm, 20 mm profile at 25°C
VOC Content:
Sag/slump: ≤1 mm, 20 mm profile at 25°C
Mixing Ratio:
Sag/slump: ≤1 mm, 20 mm profile at 25°C
Viscosity:
Sag/slump: ≤1 mm, 20 mm profile at 25°C
Storage Temperature:
Sag/slump: ≤1 mm, 20 mm profile at 25°C
Flash Point:
Sag/slump: ≤1 mm, 20 mm profile at 25°C
UV Resistance:
Sag/slump: ≤1 mm, 20 mm profile at 25°C
Hydrostatic Pressure Resistance:
Sag/slump: ≤1 mm, 20 mm profile at 25°C
Water Vapour Transmission Rate (WVTR):
Sag/slump: ≤1 mm, 20 mm profile at 25°C
Abrasion Resistance:
Sag/slump: ≤1 mm, 20 mm profile at 25°C
Bacterial/Algae Resistance:
Sag/slump: ≤1 mm, 20 mm profile at 25°C
Application Time:
Sag/slump: ≤1 mm, 20 mm profile at 25°C
Environmental Impact:
Sag/slump: ≤1 mm, 20 mm profile at 25°C
Packaging Sizes:
Sag/slump: ≤1 mm, 20 mm profile at 25°C
Hardness:
Sag/slump: ≤1 mm, 20 mm profile at 25°C
Adhesion to Substrate:
Sag/slump: ≤1 mm, 20 mm profile at 25°C
Appearance After Curing:
Sag/slump: ≤1 mm, 20 mm profile at 25°C
Clean-up Requirements:
Sag/slump: ≤1 mm, 20 mm profile at 25°C
Certification Standards:
Sag/slump: ≤1 mm, 20 mm profile at 25°C
calculator
Coverage Calculator.
Based on a manufacturers average recommended coverage of Approx. 10–12 linear meters per 600 mL sausage (10 mm x 10 mm bead).
Required:
NaN Lr
pdfs
Product Documentation.
Safety Data Sheet 2 (PDF Download)
Compliance Testing Report 1 (PDF Download)
Compliance Testing Report 2 (PDF Download)
Compliance Testing Report 3 (PDF Download)
Product How To Guide (PDF Download)
3d
Application Model
