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NEMPAL® 120 Classic Acrylic Gap Sealant
Water-based Acrylic Latex Gap Sealant
A cost-effective, water-based acrylic latex gap sealant formulated for general-purpose sealing applications. It is paintable and has good adhesion to most types of substrates.
The sealant exhibits great gunning and tooling characteristics, making application works easy and fast. Excess of sealant can be easily cleaned up with wet cloth or water, so use of masking tape is optional. It is suitable for sealing gaps and joints even if there are slight movements or vibrations, in which non-elastic fillers, joint compound or putties would fail and crack if used.
Features & Benefits
Cost effective
Paintable
Slump resistant – superior gunning & tooling
Excellent sealing and adhesion properties to most substrates
Water-based – easy clean up
Non-staining
Environmentally friendly
More flexible than conventional fillers, joint compound or putties – won’t degrade and crack with slight movements
Curing System
Appearance
Base
Colour
Density, g/cm3
Resistance to Flow, mm
Consistency
Extrudability, g/min
: Water Evaporation
: Non-sagging Soft Paste
: Water-Based Acrylic Latex
: White
: 1.55 ± 0.05
: 0
: 9.5 – 11.5
: >100
Ultimate Tensile Strength, MPa
Ultimate Elongation, %
Shore A Hardness
Tack Free Time, min
Curing Rate, mm/24h
Heat Weight Loss, %
Application Temperature
Service Temperature
: ≥1.0
: >200
: 40 – 52
: <120
: 1.5 – 2.0
: ≤25
: 5 °C to 50 °C
: -10 °C to 75 °C
It may be used for sealing gaps and joints where slight movements are anticipated (less than +/-12% of joint width).
- General sealing applications: door and window perimeter, cabinet and wardrobe, floor skirting board, architrave, cornice, wainscoting, soffit, drywall, insect screen, security mesh door, decorative panel, etc.
- Suitable for various substrates: concrete, metal, PVC / uPVC, wood, gypsum boards, FRC boards, marble, ceramics, tiles, painted surfaces, etc.
* Users are responsible to carry out test prior to installation to confirm compatibility with actual substrates, work conditions, and service requirements.
- Remove all residual dirt, grease, oil, frost, water, and old sealant thoroughly. Clean the surface with a piece of white cloth with solvent, then wipe immediately with another piece of clean cloth. Do not use soap or detergent.
- For a neat finish and less clean up works, apply masking tape and remove it before sealant skins over.
- Cut the nozzle to desired bead width at 45° angle, screw it onto cartridge and place cartridge into caulking gun to apply sealant.
- Apply sealant into the bottom of the joint so that it completely fills the joint, wetting both sides, before moving the caulking gun. Avoid moving too quickly and leave air traps in joint. Do not simply lay a bead on the surface as the sealant will not penetrate the joint by itself. Use backing material or bond breaker tape in joint to avoid three-sided bonding.
- Tool the sealant within 15 minutes after application to provide a smooth finish, and to ensure the sealant wets both sides of the joint for proper bonding.
- Depending on environment variables, the sealant will have its skin formed in 15 minutes after application. Allow to dry for one hour before applying water-based paint, or 24 hours for oil-based paint.
- Curing time depends on temperature, humidity, and thickness of sealant applied. Longer curing time is expected in damp and cold area. Uncured sealant can be cleaned up with wet cloth or water. Cured sealant can only be removed mechanically.
Sealant coverage per cartridge / sausage depends on actual joint width and depth, application style and wastages during application. Calculations can only be a rough reference.
Joint Width | Joint Depth | Coverage (450g / 280 ml) ** |
0.6 cm | 0.6 cm | 740 cm |
0.8 cm | 0.8 cm | 417 cm |
1.0 cm | 1.0 cm | 267 cm |
** Based on 5% wastage assumption. Actual coverage may vary. Formula:
Coverage = V / [ W x D x 1.05 ]
Coverage = linear run in cm per cartridge (or sausage)
V = volume of cartridge (or sausage) in ml
W = joint width in cm, D = joint depth in cm
1.05 = 5% wastage assumption (to revise accordingly)
- Store properly in a dry and well-ventilated place with temperature between +5°C and +30°C.
- Use within 24 months from date of production.
- Cartridge – 450 grams (24 cartridges / carton)
Always test before use – user is responsible to test before using to confirm the sealant produces desirable results.
For health and safety information, please refer to the latest Safety Data Sheet.
It is NOT recommended for the following applications:
- Direct exposure to sunlight during service
- Traffic areas subject to abrasion
- Areas with permanent water immersion or constantly damp
- Expected joint movement is >12%
- In totally confined joints
- On frost laded, wet or contaminated surfaces
- Surfaces that are in direct contact with food/potable water
