ST 3533 is a one-component, room-temperature curing silicone sealant. It cures neutrally and is non-corrosive, exhibiting excellent adhesion and a wide range of bonding applications. After curing, this product possesses superior mechanical properties, impact resistance, shock resistance, water resistance, corona resistance, leakage resistance, and chemical resistance. It also exhibits excellent temperature resistance, allowing use in environments ranging from -50°C to 180 ° C .
Product Features
One-component , alcohol-free, room-temperature curing silicone rubber, odorless after complete curing;
Excellent adhesion properties; it has good adhesion to most materials (glass, aluminum, ceramics, ABS, PBT, PET, PVC and PC) and generally does not require a primer .
It exhibits excellent resistance to high and low temperatures, with minimal performance changes within a temperature range of -50℃ to +180℃.
Meets online low-pressure airtightness testing requirements ;
It meets RoHS and REACH standards , and its flame retardant rating reaches HB level.
Key Technical Specifications
| Inspection items | result | Testing basis |
| Yan color | Black, white, or gray paste | Visual inspection |
| Surface drying time (min) | 8-20 | GB/T13477 |
| dense g /cm 3 | 1.4 ± 0.05 | GB/T13477 |
| hard Degree HsA | 40 | GB/T531 |
| Tensile strength (MPa) | ≥ 2.0 | GB/T528 |
| Elongation % | ≥ 300 | GB/T528 |
| Dielectric strength KV/mm | ≥1 8 | GB/T1695 |
| Volume resistivity Ω·cm | ≥2.0×10 15 | GB/T1692 |
| Operating temperature (°C) | -50~220 | / |
| Flame retardant rating | UL94HB | / |
Note: The above test conditions are temperature 23±2℃ and humidity 50±5%RH;
Main uses:
Bonding and sealing of products such as automotive lights;
Structural bonding and sealing of various glass, aluminum, and engineering plastics;
Various applications requiring bonding or sealing in other industries.
Designed for applications requiring high strength and flexibility in bonding, such as when the thermal expansion coefficients of the bonded materials are inconsistent, like bonding glass to metal or glass to plastic.
How to use
The optimal application conditions for sealant are a temperature of 4℃ to 40℃ and a relative humidity of 40% to 80%.
Before use , clean the surface of the object to be bonded or coated. Use a suitable solvent, such as anhydrous alcohol, isopropanol, or acetone, to remove rust, dust, oil, and water.
Cut the nozzle with a utility knife and squeeze the adhesive onto the cleaned surface, ensuring even distribution. Once the surface is dry, join the surfaces to be bonded together and secure them. Place the coated parts in the air and allow them to cure at room temperature for 24 hours before use.
After use, any unused adhesive should be immediately sealed by tightening the cap. When reusing, if a small amount of skin forms at the seal, simply remove it; this will not affect normal use.
Packaging Specifications
300ml/bottle, 24 bottles/box; 20kg plastic drum.
Storage
A cool, dry place between 5℃ and 27 ℃ , away from direct sunlight. Shelf life is 6 months.
Precautions
This product is non-toxic once fully cured, but contact with eyes should be avoided before curing. If contact with eyes occurs, rinse thoroughly with plenty of water and seek medical attention immediately. Uncured products should be kept out of reach of children.
Users are advised to thoroughly understand the product and its performance before using it, and to conduct compatibility tests. Due to the diversity of practical applications, our company does not guarantee against problems arising from the use of our products under specific conditions. Users encountering any problems during use can communicate with our engineers.
We will do our best to provide you with the best product application solutions.
Sustainability
At Hilkem we are committed to maintaining high human,environmental and ethical values. That is only possible thanks to the cooperation with local communities,with industry bodies, authorities and reulator and with you.
We are embedding sustainability into every aspect of our business, to help us play a greater role in creating a fairer, more sustainable future and respond to the climate emergency
How can we help you?
The fastest way to determine the best solution for your needs is to speak with one of our expert team. We'll be able to quickly narrow down your options and provide you with objective advice on what's best for you.