One Component RTV Silicone Sealant - 9238B

Kootai 9238 is a versatile one-part RTV (Room Temperature Vulcanizing) silicone elastomer engineered to meet industrial demands for bonding, sealing, and protection. It cures upon exposure to ambient moisture, creating a durable elastomer with exceptional adhesion to a variety of substrates including metals, ceramics, plastics, glass, and wood.
This neutral-cure formulation delivers excellent electrical insulation, thermal stability, and resistance to chemicals and weathering. 9238 is the ideal choice for applications requiring long-term performance in environments ranging from 50C to +200C. With excellent flame retardant and self-extinguishing properties, it also ensures safety where reliability under high temperatures is critical.

Industrial Features

Sealing and bonding in electronics and electrical devices
Waterproofing for enclosures and circuit housings
Dust and moisture barriers for industrial control units
Shock-absorbing layer for sensitive electronic modules
Adhesion where thermal cycling and flame resistance are crucial
Use in automotive, telecommunication, lighting, and power supply industries 

Features

Sealing and bonding in electronics and electrical devices
Waterproofing for enclosures and circuit housings
Dust and moisture barriers for industrial control units
Shock-absorbing layer for sensitive electronic modules
Adhesion where thermal cycling and flame resistance are crucial
Use in automotive, telecommunication, lighting, and power supply industries 

FAQ

Q1: What materials does 9238 adhere to?
A1: 9238 exhibits excellent bonding with aluminum, stainless steel, copper, brass, glass, ABS, PET, and PCB. Moderate adhesion with PC and lower adhesion to PE/PP.
Q2: Does it require a primer?
A2: In most cases, primer is not needed. However, surface prep with a solvent like alcohol or xylene and testing on the target substrate is recommended.
Q3: How is it applied?
A3: It is dispensed directly from the cartridge. Once exposed to air, it begins curing and becomes tack-free in under 10 minutes at room temperature and 50% RH.
Q4: What are the available packaging sizes?
A4: It comes in 50ml, 100ml, 300ml, 2600ml, and 300kg bulk containers. Custom packaging is also available on request.
Q5: How should it be stored?
A5: Store in a cool, dry place under 25C. Keep away from direct sunlight and out of reach of children. Shelf life is 6 months.
Q6: Is it safe to use indoors?
A6: Yes, but ensure good ventilation. It releases alcohol vapors during curing, which should not be inhaled in high concentration