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NPT · Marine Adhesives & Sealants
U-Seal 550FC
A rapidly curing polyurethane adhesive and sealant for assembly, seam sealing and repair. Its shape-holding consistency allows brushed or tooled seams and helps reduce vibration and sound in bonded structures.
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View documentation 4 files & links ↓Key features
- Single-part formulation that is odourless and PVC-free
- Applied cold with a short break-off string and strong resistance to sagging
- Suitable for metals, primers, two-component coatings and painted plastics
- Can be painted with compatible coatings; carry out a preliminary test
Specifications
| Chemistry | One-component polyurethane |
|---|---|
| Applications | Assembly bonding; welded seams and overlapping panels |
| Curing | Fast moisture cure through the bead |
| Finish | Brushable and toolable; remains elastic |
| Shore A hardness | Approx. 47 |
| Skin time | Approx. 50 minutes at 23°C / 50% RH |
| Cure depth in 24 hours | Approx. 3.2 mm at 23°C / 50% RH |
| Tensile strength | Approx. 3.0 N/mm² |
| Elongation at break | Approx. 480% |
| Application temperature | +5°C to +40°C |
Product resources
Documentation
Manuals, technical information and catalogues for U-Seal 550FC.
Product documents & support
U-Seal 550FC — Technical data sheet (PDF)NPT technical sheet · English · TDS2021 eng ver 5.1 (162 KB)Download PDF ↓
NPT manufacturer product pageOfficial product information and latest updatesNPT safety data portal — login requiredManufacturer account required. Contact Custom Marine to request the current product SDS.Brand catalogue
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