1. Permanently flexible and resists cracking or shrinking
2. It is suitable for heavy-duty marine work
JOINLEADER 688 100% Acetoxy Silicone Sealant
JOIN LEADER 688 100% Silicone Sealant is a high-quality, high middle modulus, easily applied, one-part, acetic-curing silicone sealant that reacts with atmospheric moisture to form a durable, flexible seal.
Permanently flexible and resists cracking or shrinking. The waterproof seal stops leaking.
Non fungicide. Not harmful to marine life.
Approved for construction of aquariums
Outstanding adhesion to glass, glazed surfaces, ceramic tiles, many plastics and most paints
Suitable for high mechanical loads
Low shrinkage on curing
Flexible at low (–50 °C) and high (+200 °C) temperatures
Not harmful to marine life.
As Supplied – tested at 23°C±2°C, RH50%±5%:
Tack Free Time, min.
As Supplied – tested at 23°C±2°C, RH50%±5% 7days :
Hardness, 24H,Shore A
Hardness, 7D,Shore A
Tensile Strength, MPa
ASTM C 1135
Elongation at Break, %
Volatile content, %
Depth of curing, 24H, mm
Depth of curing, 7D, mm
Modulus at 100% elongation, MPa
ISO 8 339 – A
Adhesion Failure Area, %
Tear Strength, N/mm
ISO 34 – C
JOINLEADER 688 100% Silicone Sealant is a high-performance sealant designed for the construction of aquariums and high-quality glass structures (Total Vision Glazing, TVG).
JOINLEADER 688 100% Silicone Sealant is also suitable for use in glazing and industrial applications and for the construction of silos and containers.
It may be applied by hand or machine to seal a variety of substrates such as glass, coated glass, ceramic tiles, enamel, painted surfaces (wood and other), aluminum, steel and many plastics. In some cases, metal and plastic substrates require priming before JOINLEADER 688 100% Silicone Sealant is applied.
Minimum Width: 5mm
Maximum Width: 30mm
Minimum Depth: 5mm
Recommendation: 2 * depth = width
REQUIRED TESTING IN THE APPLICATION
It is the responsibility of the end user to thoroughly test any proposed use of the sealant and independently conclude satisfactory performance in the application.
12 months in unopened packaging in a cool and dry storage place at temperatures between +5°C and 27°C.
Transparent, black, white and silvery gray.
Also we can produce the sealant with special color upon customers' requirement.