antas-355 Two-component Modified Silicone Sealant

Model : antas-355
Certification : ISO9001, ISO14001, ISO45001
Packaging : 4L
Brand : antas
Place : Guangzhou, China


Antas-355 is a two-component, room temperature rapid curing modified silicone sealant. It has excellent adhesion, resistance to weather and pollution, and is safe and environmental-friendly. Antas-355 can be applied coatings on the surface. It also has outstanding adhesion to porous materials such as concrete, calcium silicate board, fiber cement board, stone and ceramics. It is mainly used for waterproof joint sealing of fabricated building wallboard, and can also be used for joint sealing of other buildings. The movement capacity is ±25%.

Standard: GB/T 14683-2017
                 JC/T 881-2017

Product manual
Antas-355 is a two-component, room temperature rapid curing modified silicone sealant. It has excellent adhesion, resistance to weather and pollution, and is safe and environmental-friendly. Antas-355 can be applied coatings on the surface. It also has outstanding adhesion to porous materials such as concrete, calcium silicate board, fiber cement board, stone and ceramics. It is mainly used for waterproof joint sealing of fabricated building wallboard, and can also be used for joint sealing of other buildings. The movement capacity is ±25%.
Product feature
  • High efficiency and excellent construction performance, which can be completely cured in 48h;
  • Wide bonding range and good adhesion with most substrates, especially suitable for porous substrates;
  • Strong resistance, excellent weather aging resistance and moisture resistance;
  • Good elasticity and tear resistance, with movement capacity of 25%;
  • Strong coating adaptability, the surface can be painted with a variety of coatings
  • Strong pollution resistance, not easy to produce vertical flow pollution;
  • Low flavor, environmental protection, ultra-low VOC, no isocyanate;
  • Withstand temperature range: - 40 ℃ ~ + 90 ℃:
Main purpose
  • Joint sealing of prefabricated building concrete, GRC and other base materials;
  • Joint sealing of concrete slab of underground pipe gallery;
  • Joint sealing for other building materials.
Standards compliant
  • GB/T 14683-2017
  • JC/T 881-2017
Technical parameters
Technical parameters
No. Test items GB/T 14683-2017 index
Stand Ordain
Test result
1 Appearance Even, exquisite paste, Even, exquisite paste,
no bubble, no skinning, no gel no bubble, no skinning, no gel
2 Density, g/cm3 Specified value±0.1 1.0
3 Sag degree, mm ≤ 3 0
4 Tack free time, h ≤24 8
5 Applicable period, min ≥30 8h50min
6 Elasticity recovery rate,% 70 90
7 Tensile Modulus,  MPa 23ºC ≤0.4 0.3
-20ºC ≤0.6 0.3
8 Adhesion at constant load No destruction No destruction
9 Adhesion at constant load  after water immersion No destruction No destruction
10 Adhesion at constant load  after cold drawn and hot press No destruction No destruction
11 Loss of mass, % ≤ 5 1