1.Permanently flexible and resists cracking or shrinking. 2.It is suitable for heavy-duty marine work.
JOINLEADER 688 Aquarium Silicone Sealant
PRODUCT DESCRIPTION
JOIN LEADER 688 Aquarium 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.
FEATURES
Approved for construction of aquariums
Non sag
Outstanding adhesion to glass, glazed surfaces, ceramic tiles, many plastics and most paints
Excellent weatherability
Non fungicide.
Suitable for high mechanical loads
Low shrinkage on curing
Abrasion resistant
Flexible at low (–50 °C) and high (+200 °C) temperatures
Not harmful to marine life.
TECHNICAL DATA
As Supplied – tested at 23°C±2°C, RH50%±5%:
Gravity, g/cm3 0.98~1.1
Sag/Slump, mm ≤1 ASTM D2202-00(2006)
Tack Free Time, min. 5~20 GB/T 13477.5-2002
Extrudability, ml/min. ≥150 GB/T 13477.3-2002
As Supplied – tested at 23°C±2°C, RH50%±5% 7 days :
Hardness, 24H,Shore A ≥15 ASTM D2240-05
Hardness, 7D,Shore A ≥20 ASTM D2240-05
Tensile Strength, MPa ≥0.6 ASTM C 1135
Elongation at Break, % ≥200 ASTM D638
Volatile content, % ≤7 EPA -24
Depth of curing, 24H, mm ≥2 ASTM C1184-05
Depth of curing, 7D, mm ≥6 ASTM C1184-05
Modulus at 100% elongation, MPa ≥0.4 ISO 8 339 – A
Adhesion Failure Area, % ≤5 GB/T 13477.8-2002
Tear Strength, N/mm ≥4 ISO 34 – C
APPLICATIONS
JOINLEADER 688 Aquarium Silicone Sealant is a high-performance sealant designed for the construction of aquariums and high-quality glass structures (Total Vision Glazing, TVG).
JOINLEADER 688 Aquarium 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 Aquarium Silicone Sealant is applied.
APPLICATION LIMITS
JOINLEADER 660 Large Plate Glass Structural Silicone Sealant is not adapted to structural fitting and following situations:
1. To all surfaces that bleed oil, plasticizers or solvents such as wood immersed in oil, oil crack filler, and some uncured or sulfur zed fat and to surface where is wet;
2. To the substrate that the surface temperature exceeds +50°C or apply at temperatures below 5°C;
3. Use in the manufacturer of IG units;
4. To closed or confined areas where sealant cure may be inhabited by lack of air (silicone sealant need the water in the air to cure);
5. To use in construction or sealing of aquariums;
6. To the circumstances as immersed in water for a long time;
7. Shall not be applied on lead, zinc and galvanized steel plate.
8. To the painted surfaces, may cause seal failure as the paint cracking or stripping;
9. To the places that easily suffer mechanical clash;
10. Use in the IG curtain wall sealing.
11. Contact with Neutral silicon sealant.
HOW TO USE
APPLICATION TEMPERATURE: +5°C to +40°C
Cleanse with a cleaning agent, to keep the substrate surfaces completely clean(JOIN LEADER also provide the cleaning agent for your convenience).
Use the sealant after cleaning agent dries, around 1~2mins later. You can use two different cloth, one for cleaning agent, and the other for sealant. (Notice that the two can’t be mixed use together, and the second cloth will be better purified cotton and no picking.)
For better appearance, cover outside of joint areas with masking taps before application.
Cut nozzle to desired size and extrude sealant to joint areas.
Tool immediately after sealant application, make it smooth and remove masking tape before sealant skins.
JOINT SIZE
Minimum Width: 5mm
Maximum Width: 30mm
Minimum Depth: 5mm
Maximum Depth:12mm
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.
SHELF LIFE
12 months in unopened packaging in a cool and dry storage place at temperatures between +5°C and 27°C.
COLOR
Transparent, black, white and silvery gray.
Also we can produce the sealant with special color upon customers' requirement.
PACKAGING
Cartridges: 280mL, 300ml,
Aquarium Silicone Sealant
