LOCTITE SI 5910
Harmonization Code : 3506.91.90.99 | Prepared glues and other prepared adhesives, not elsewhere specified or included; products suitable for use as glues or adhesives, put up for retail sale as glues or adhesives, not exceeding a net weight of 1 kg ; Adhesives based on polymers of headings 3901 to 3913 or on rubber; Other ; Other
Main features
- High Movement Flange Sealing
- Engine Oil Resistance
- Thixotropic Application Control
Product Description
LOCTITE® SI 5910® is a one-component, room-temperature-vulcanizing oxime silicone sealant supplied as a black thixotropic paste. It is designed for formed-in-place sealing of stamped sheet-metal covers and flanges, including timing covers and oil sumps, where resistance to automotive engine oils and high joint movement is required. The moisture-curing material limits migration after application and develops a flexible elastomeric seal with strong adhesion to metal substrates.
Key features
- High-movement flange sealing: Produces a flexible cured seal with at least 400% elongation at break.
- Excellent engine-oil resistance: Supports demanding automotive timing-cover, oil-sump, and flange-sealing applications.
- Thixotropic one-component application: Requires no mixing and helps reduce migration after dispensing.
TDS, SDS & Technical Documents
Technical Specifications
General Properties
Additional Information
As-supplied / before-processing properties
Typical properties of the uncured material; values are reference data rather than guaranteed product specifications.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Technology | Silicone | — | Uncured material |
| Chemical type | Oxime silicone | — | Uncured material |
| Appearance | Black paste | — | Uncured material |
| Components | One component | — | No mixing required |
| Rheology | Thixotropic paste | — | Reduced migration after application |
| Cure mechanism | Room-temperature vulcanizing | RTV | Atmospheric moisture cure |
| Specific gravity | 1.34 | — | At 20°C |
| Extrusion rate | 300–650 | g/min | 0.62 MPa pressure, 15 seconds, 25°C; Semco cartridge |
| Tack-free time | ≤40 | min | 25°C and 50 ± 5% RH |
| Density | 1.30–1.37 | g/cm³ | At 25°C; LCT STM 107; SDS value |
| Flash point | >93.3 | °C | SDS value |
After-processing / final-state properties
Typical cured-material properties depend on cure time, temperature, humidity, bond gap, substrate, surface preparation, and test method.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Shore hardness | 30 | Shore A | ISO 868; cured 1 week at 25°C and 50 ± 5% RH |
| Elongation at break | ≥400 | % | ISO 37; cured 1 week at 25°C and 50 ± 5% RH |
| Tensile strength | ≥1.7 | N/mm² | ISO 37; cured 1 week at 25°C and 50 ± 5% RH |
| Tensile strength at 100% elongation | 0.6–1.0 | N/mm² | ISO 37; cured 1 week at 25°C and 50 ± 5% RH |
| Volume resistivity | 1.69 × 1014 | Ω·cm | IEC 60093; cured material |
| Surface resistivity | 2.81 × 1016 | Ω | IEC 60093; cured material |
| Lap-shear strength | 0.9–1.4 | N/mm² | Mild steel; 0.5 mm gap; cured 21 days at 23°C and 60 ± 5% RH |
| Lap-shear strength | 0.6–1.4 | N/mm² | Aluminum 2024-T3; 0.5 mm gap; cured 21 days at 23°C and 60 ± 5% RH |
| Lap-shear strength | 1.0–1.6 | N/mm² | Alclad; 0.5 mm gap; cured 21 days at 23°C and 60 ± 5% RH |
| Lap-shear strength | 1.0–1.6 | N/mm² | Zinc dichromate; 0.5 mm gap; cured 21 days at 23°C and 60 ± 5% RH |
