LOCTITE SI 5950
Harmonization Code : 3919.10.80 | Other self-adhesive plastic rolls not exceeding 20 cm wide.
Main features
- 14-Minute Shadow-Area Tack-Free
- 250 to 425 g/min Extrusion
- At Least 180% Cured Elongation
Product Description
LOCTITE SI 5950 is a one-component black acetoxy silicone cure-in-place gasketing material with UV primary cure and atmospheric-moisture secondary cure for shadowed areas. The uncured material has a specific gravity of 1.1 at 20 deg C and a Semco-cartridge extrusion rate of 250 to 425 g/min. In non-UV shadowed areas, the material skins in about 11 minutes and becomes tack free in about 14 minutes. Cured-property testing after controlled UV exposure reports Shore A hardness of 20 to 33, elongation at least 180%, and tensile strength at least 1 N/mm2.
Key features
- Shadow-Area Surface Cure: Non-UV-exposed material typically becomes tack free in about 14 minutes under the stated moisture-cure conditions.
- Controlled Extrusion: Semco-cartridge extrusion is 250 to 425 g/min at 0.62 MPa for 15 seconds at 25 deg C.
- Cured Flexibility: Elongation is at least 180% after 70 mW/cm2 at 365 nm for 60 seconds per side plus three days at 22 deg C and 50+/-5% RH.
Applications
Cure-in-place gasketing; sealing.
Technical Specifications
General Properties
Color
Black
The color
Additional Information
Technical properties
As-supplied properties
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Specific gravity | 1.1 | 20 deg C | |
| Flow | 89 | mm | ISO 7390; after 2 minutes at 25 deg C |
| Extrusion rate | 250 to 425 | g/min | 0.62 MPa for 15 seconds at 25 deg C; Semco cartridge |
Technical properties
Final-state properties
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Shrinkage | 1.5 | % | After 40 mW/cm2 at 365 nm for 60 seconds per side plus 7 days at 22 deg C and 50% RH |
| Tear strength | 2.3 | N/mm | ISO 34-1, Die B; after 40 mW/cm2 at 365 nm for 60 seconds per side plus 7 days at 22 deg C and 50% RH |
| Hardness | 20 to 33 | Shore A | After 70 mW/cm2 at 365 nm for 60 seconds per side plus 3 days at 22 deg C and 50+/-5% RH |
| Elongation | >=180 | % | After 70 mW/cm2 at 365 nm for 60 seconds per side plus 3 days at 22 deg C and 50+/-5% RH |
| Tensile strength | >=1 | N/mm2 | After 70 mW/cm2 at 365 nm for 60 seconds per side plus 3 days at 22 deg C and 50+/-5% RH |
