RTV Transparent Silicone Sealant LOCTITE SI 5145 300ml

LOCTITE® SI 5145 is specifically formulated for bonding, sealing, and coating electronic devices, particularly in automotive and industrial electronics.

Its non-slumping formulation makes it ideal for reinforcing and strain-relieving delicate components.

The product offers excellent resistance to weathering, moisture, and ozone, maintaining reliable performance in harsh environments. It is suitable for applications requiring continuous service from -50°C to +200°C.

📄 Full Technical Data Sheet:
https://datasheets.tdx.henkel.com/LOCTITE-SI-5145-en_GL.pdf

Technical Overview

• Type: RTV Silicone Sealant

• Chemical base: Alkoxy silicone

• Curing: Room temperature (moisture curing)

• Appearance: Translucent

• Components: One-component (no mixing required)

Key Benefits

• Non-corrosive

• High strength and high flexibility

• Excellent vibration and shock absorption

• Non-slumping – ideal for vertical or delicate components

• Resistant to moisture, ozone, and weathering

Typical Applications

• Bonding, sealing, and coating of electronic components

• Automotive, industrial, and military electronics

• Reinforcement and strain relief of sensitive parts

Performance

• Service temperature: -50°C to +200°C

• Tack-free time: ≤ 5 hours @ 25°C / 50% RH

• Shore hardness (A): ≥ 25

• Elongation: ≥ 500%

• Tensile strength: ≥ 3.4 N/mm²

• Tear strength: 40 N/mm

Electrical Properties

• Dielectric strength: 18 kV/mm

• Volume resistivity: 4 × 10¹⁵ Ω·cm

Standards

• Tested to MIL-A-46146B (regional approval)

Storage

• Optimal storage temperature: 8°C to 21°C