Xtraseal MC-800 Acrylic Latex Sealant 480g White – Indoor & Outdoor Use, Versatile and Durable Sealant

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Description: MC-800 is a water-based, gun-applied acrylic sealant that cures to a flexible, tough rubber with excellent adhesion to porous surfaces without primer. It is cost-effective, eco-friendly, and can be easily cleaned with water. This dispersion acrylic sealant outperforms traditional caulking compounds like butyl and oil-based mastics.


  • Cargo containers and cabins
  • General glazing on wood, concrete, marble, etc.
  • DIY projects: gutters, door and window joints, skylights, air-conditioning
  • Energy-saving: seals air drafts around air conditioners


  1. Ensure the surface is clean and dry.
  2. Mask smooth surfaces for easy cleanup.
  3. Use approved back-up material in joints.
  4. Cut the nozzle to the desired size.
  5. Insert the cartridge into a caulking gun.
  6. Apply sealant uniformly, tooling within 5 minutes.
  7. Clean excess sealant with water.

Curing Time:

  • Tack-free in approximately 10 minutes.
  • Cures to a depth of 10mm in 7-14 days (longer in cold or humid conditions).


  • Base: Acrylic latex
  • Appearance: Non-sagging paste
  • Color: White
  • Specific Gravity: 1.60 ± 0.05
  • Shore A Hardness: ~30
  • Solid Content: 85 ± 3%
  • Tack-Free Time: ~10 minutes
  • Application Temperature: 5°C to 50°C
  • Service Temperature: -10°C to 80°C
  • Shelf Life: 12 months

Storage: Store in a dry, cool place between 5°C and 30°C.


  • Not suitable for outdoor use if rain is expected within 2 hours.
  • Not recommended for constant water immersion or joints with more than 10% movement.
  • Preliminary compatibility tests are recommended for best results.