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Quick Details

  • Place of Origin: Zhejiang, China (Mainland)
  • Classification: Other Adhesives
  • Main Raw Material: Acrylic
  • Usage: Construction, Packing, Transportation
  • Brand Name: JOIN LEADER
  • Model Number: JOINLEADER 300
  • Color: White, Grey

Packaging & Delivery

Packaging Details Cartridges: 280mL, 300mL
PE Tube: 140mL
Delivery Time 10-15 days

JOIN LEADER 300 Acrylic Paint Sealant



JOIN LEADER 300 Acrylic Paint Sealant is a one part, general-purpose, water-based low modulus RTV sealant. It is flexible and paintable.

JOIN LEADER 300 Acrylic Paint Sealant provides excellent adhesion to most surfaces. Its long lasting flexibility allows continuous expansion and contraction without cracking or shrinking.

It is easy to apply and compatible with most materials used in construction e.g. concrete, wood, brick, natural and artificial stone, glass, metal and sanitary-ware.  



Safe-Solvent free, water based


Flexible without cracking

Ideal for bathroom, shower room, kitchen

East to use - one part no mixing

Environmental friendly, easily clean up with water

Good weatherability and UV stability

Excellent gunnability (5°C to 50°C)

Good adhesion to wood, concrete, metal and marble without primer



As Supplied – tested at 23°C±2°C, RH50%±5%:

Item                                         Data                    Standard

Aspect:                         Tixotropic Paste

Gravity, g/cm3                     1.5~1.6

Sag/Slump, mm                       ≤2                   ASTM D2202-00(2006)

Tack Free Time, min.                 ≤25                   GB/T 13477.5-2002    

Extrudability, ml/min.                 ≥80                   GB/T 13477.3-2002

Service Temp, °C                   -10 ~+80

Application Temp, °C                 +5~+50


As Supplied – tested at 23°C±2°C, RH50%±5% 7 days :

Hardness, 24H,Shore A             ≥25                     ASTM D2240-05

Hardness, 7d, Shore A           ≥40                    ASTM D2240-05

Depth of curing, 24H, mm           ≥2                       ASTM C1184-05

Depth of curing, 7d, mm           ≥6                       ASTM C1184-05

Recovery of elastic, %             ≥35                   GB/T 13477.17-2002

Elongation at break, %             ≥50                     GB/T1040.2-2006

Solid Content, %                   ≥80                       ASTM D1489-97(2004)

Shrinkage, %:                     ≤20

Tensile modulus(MAX), MPa       ≥0.35                     GB/T 13477.8-2002

Adhesion Properties           non-destruction



JOIN LEADER 300 Acrylic Paint Sealant can be widely used for sealing gaps and cracks prior to paint; perimeter sealing around window frames, architraves, skirting boards, picture and china rails; sealing around vanities and bath; internal corners of walls, cracks, joints and gaps where rigid fillers crack.

JOIN LEADER 300 Acrylic Paint Sealant can be used for joining & sealing a variety of building materials and construction elements that are likely to undergo moderate movement.

JOIN LEADER 300 Acrylic Paint Sealant is suitable for repairs cracks in walls, skirting boards, doors and windows and seals between plaster board panels, ceiling boards, cornices, & decorative ceiling panels.



24 months in unopened packaging in a cool and dry storage place at temperatures between +5°C and 25°C.



White, Grey, etc.



Cartridges: 280mL, 300mL

PE Tube: 140mL

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