LOCTITE UR 3371
Harmonization Code : 3404.90.00.00 | Artificial waxes and prepared waxes : Other
Main features
- 40-Minute Skin-Over Time
- -30 to 80 deg C Service Range
- More Than 300% Cured Elongation
Product Description
LOCTITE UR 3371 is a one-part polyurethane adhesive/sealant supplied as a paste and cured by atmospheric moisture. It is available in gray, black, and white and is applied from 5 to 38 deg C. Typical curing data at 23 deg C and 50% RH include a 40-minute skin-over time, 50 to 70 minute tack-free time, and 3 mm cure rate after 24 hours. After 7 days under the same conditions, typical cured properties include Shore A hardness 50 and elongation greater than 300%.
Key features
- Surface Skin Formation: Typical skin-over time is 40 minutes at 23 deg C and 50% RH.
- Temperature Capability: In-service temperature range is -30 to 80 deg C.
- Cured Flexibility: Typical elongation at break is greater than 300% after seven days at 23 deg C and 50% RH.
Applications
Sealing and bonding side panels; elastic interior and exterior seams and joints in specialty vehicles and caravans.
TDS, SDS & Technical Documents
Technical Specifications
General Properties
Specific GravitySpecific Gravity
1.08Mechanical Properties
ElongationElongation
300 %Additional Information
Technical properties
As-supplied properties
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Appearance | Gray, black, white | As supplied | |
| Form | Paste | As supplied | |
| Specific gravity | 1.08 | 23 deg C | |
| Extrusion rate | 300 | g/min | 60 seconds at 23 deg C; 0.6 MPa pressure |
Technical properties
Final-state properties
Typical cured properties after 7 days at 23 deg C and 50% RH.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Shore hardness | 50 | Shore A | ASTM D 412; cured 7 days at 23 deg C, 50% RH |
| Elongation at break | Greater than 300 | % | ASTM D 412; cured 7 days at 23 deg C, 50% RH |
| Tensile strength | Greater than 2.5 | N/mm2 | ASTM 412C; cured 7 days at 23 deg C, 50% RH |
