Three Bond 1221C / 1221D - RTV-Silikon-Klebedichtung - 100 g Tube

Sealant Three Bond 1221C/1221D at a Glance

The Three Bond 1221C/1221D is a single-component, solvent-free RTV silicone adhesive sealant in the 100 g tube. In a color ranging from transparent to white, it can be applied flexibly and offers fast skin formation as well as excellent weather- and moisture-resistance and good electrical properties.

As a RTV silicone, it reliably bonds ceramic, metal, or glass-like surfaces and compensates temperature fluctuations. The paste is particularly suitable where compact seals are required in electronic enclosures, enclosure covers, or potting areas.

Suitable for Electronics and Sealing Applications

The pasty consistency enables easy application even in tight gaps. The material is single-component and solvent-free, ideal for electronic assemblies and provides a stable, flexible sealing connection despite temperature influences.

Technical Data of Three Bond 1221C/1221D

• Type: Single-component, solvent-free
• Color: Transparent / White
• Viscosity: Pasty
• Density: 1.05 g/cm³
• Temperature Range: -60 to 200 °C
• Shelf Life: 9 months
• Shore Hardness: D 20
• Elongation: 500 %
• Tensile Strength: 2.5 MPa
• Product Description: Three Bond 1221C/1221D - RTV silicone adhesive sealant - 100 g Tube

Properties & Benefits

Due to the solvent-free formulation, the assembly stays clean, and the fast skin formation reduces waiting times during assembly. The flexible sealing connection is temperature-stable from -60 °C to 200 °C, resists moisture, dust and weathering, and provides stable electrical performance – ideal for electronic housings and printed circuit boards.

• Pasty consistency enables easy filling of narrow gaps and contours.
• High elongation (500 %) and tensile strength (2.5 MPa) ensure mechanical durability under vibrations.
• Colors: Transparent/White help maintain the visual appearance of the seal.

Processing & Practice

Apply the material to clean, dry surfaces and smooth it promptly to ensure uniform sealing. The single-component nature and solvent-free formulation facilitate processing without mixing or solvents. Please observe the manufacturer’s instructions for curing and safety.