LOCTITE SI 5900
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
- At Least 100-Second Blow-Out Resistance
- At Most 0.2 mm ISO 7390 Flow
- At Least 400% Cured Elongation
Product Description
LOCTITE SI 5900 is a one-component black oxime RTV silicone gasketing compound for stamped sheet-metal covers, including timing covers and oil sumps. The thixotropic paste has a typical specific gravity of 1.3 to 1.37 at 25 deg C. It records at least 100 seconds of blow-out resistance on a 4 mm flange with a 1.5 mm gap at 0.014 MPa and at most 0.2 mm flow after 2 minutes at 25 deg C by ISO 7390. Typical tack-free time is 7 to 24 minutes at 25 deg C and 50+/-5% RH. After one week under those conditions, cured elongation is at least 400%.
Key features
- Flow Control: ISO 7390 flow is at most 0.2 mm after 2 minutes at 25 deg C.
- Blow-Out Test Performance: Records at least 100 seconds on a 4 mm flange with a 1.5 mm gap at 0.014 MPa.
- Cured Flexibility: Elongation is at least 400% by ISO 37 after one week at 25 deg C and 50+/-5% RH.
Applications
Stamped covers; timing covers; oil sumps; similar gasketing applications.
TDS, SDS & Technical Documents
Technical Specifications
General Properties
Mechanical Properties
Additional Information
As-supplied properties
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Specific gravity | 1.3 to 1.37 | 25 deg C | |
| Extrusion rate | 20 to 50 | g/min | 0.62 MPa for 15 seconds at 25 deg C; Semco cartridge |
| Blow-out resistance | >=100 | s | 4 mm flange; 1.5 mm gap; 0.014 MPa |
| Flow | <=0.2 | mm | ISO 7390; after 2 minutes at 25 deg C |
| Volatile content | <=0.5 | % | As reported |
Final-state properties
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Hardness | 31 to 46 | Shore A | After 1 week at 25 deg C and 50+/-5% RH |
| Elongation | >=400 | % | ISO 37; after 1 week at 25 deg C and 50+/-5% RH |
| Tensile strength | >=1.7 | N/mm2 | ISO 37; after 1 week at 25 deg C and 50+/-5% RH |
| Volume resistivity | 6.7x10^13 | ohm cm | IEC 60093 |
| Lap shear strength | 1 to 1.4 | N/mm2 | ISO 4587; mild steel; 0.5 mm gap; after 21 days at 23 deg C and 50+/-5% RH |





















