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Customer focused services
Customer focused services
SP Seal Coat HT is a single-component, water-based hybrid silicone topcoat designed to be applied directly over HPC® Coating. It seals up to 500°F / 260°C and serves two critical jobs: blocking water and moisture absorption into HPC®, and providing an additional barrier against Corrosion Under Insulation (CUI).
| Property | Value |
|---|---|
| Chemistry | Water-based hybrid silicone with ceramic loads |
| Volume solids | 76.4% |
| VOC | 200 g/L · 1.67 lbs/gal |
| Dry time | 30–60 minutes to tack-free |
| Full cure | 2 days |
| Application thickness | 20 mils (0.5 mm) |
Corrosion Under Insulation is the #1 silent killer of industrial piping systems — and up to 85% of all external pipeline corrosion occurs beneath disbonded insulation coatings. SP Seal Coat HT, paired with HPC®, creates an insulation system that resists CUI rather than enabling it.
Find answers to common questions about our services, processes, and how we work with clients across various industries.
HPC® is a ceramic insulation layer — porous by design — and benefits from a sealing topcoat in wet or weathering environments. SP Seal Coat HT seals the system and protects against moisture-driven corrosion underneath.
Sealing trapped moisture in is worse than no topcoat at all — the moisture has nowhere to go and accelerates CUI from the inside. The moisture-gauge check is a small step that determines whether the entire system performs.
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