RTV Black Silicone Sealant LOCTITE SI 5910 300ml

LOCTITE® SI 5910 is a black RTV silicone sealant designed specifically for sealing applications requiring excellent resistance to automotive engine oils.

It is ideal for stamped sheet metal covers such as oil sumps and timing covers, where high joint movement and long-term oil resistance are required.

Thanks to its thixotropic (non-slumping) nature, LOCTITE® SI 5910 minimizes product migration after application, ensuring clean and precise sealing even on vertical surfaces.

📄 Full Technical Data Sheet:
https://datasheets.tdx.henkel.com/LOCTITE-SI-5910-en_GL.pdf

Technical Overview

• Type: RTV Silicone Sealant

• Chemical base: Oxime silicone

• Curing: Room temperature vulcanizing (moisture curing)

• Appearance: Black paste

• Viscosity: Thixotropic

• Components: One-component (no mixing required)

Key Benefits

• Excellent resistance to automotive engine oils

• Withstands high joint movement

• Non-slumping – ideal for vertical applications

• Reliable long-term sealing performance

• Easy application and clean bead control

Typical Applications

• Oil pans (oil sumps)

• Timing covers

• Stamped metal engine covers

• Automotive sealing applications exposed to oil

Performance

• Tack-free time: ≤ 40 minutes @ 25°C / 50% RH

• Shore hardness (A): 30

• Elongation: ≥ 400%

• Tensile strength: ≥ 1.7 N/mm²

• Lap shear strength (steel): 0.9 – 1.4 N/mm²

Electrical Properties

• Volume resistivity: 1.69 × 10¹⁴ Ω·cm

• Surface resistivity: 2.81 × 10¹⁶ Ω

Storage

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