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Product Selection Guide
Sealant Selection Guide
Help purchasers, engineers, and project owners quickly and accurately select the appropriate sealant system based on different applications and performance requirements—reducing the risk of misselection, rework, and
complaints.
Application Guide
This guide outlines standard sealant application steps, common issues, and substrate-specific tips to ensure reliable performance.
Standard Application Steps
01
Surface Preparation
Clean, dry surface; remove old sealant if any.
02
Masking (Optional)
Use masking tape for clean edges.
03
Sealant Application
Cut nozzle at 45°, apply evenly and continuously.
04
Tooling & Finishin
Tool before skin forms; remove tape immediately.
05
Curing
Avoid water, load, or movement before full cure.
COMMON APPLICATION PROBLEMS
Poor Adhesion
Cause: dirty surface, incompatibility Solution: improve cleaning, confirm compatibility, use primer
Cracking / Shrinkage
Cause: excessive movement, wrong sealant Solution: use higher elasticity, correct joint design
Bubbling
Cause: moisture, high humidity Solution: ensure dry substrate, proper conditions
SUBSTRATE NOTES
1
Glass & Aluminum
Neutral silicone recommended
2
Concrete & Masonry
Porous, primer may be needed
3
Metal
Remove rust, confirm compatibility
4
Plastic
Compatibility test required
5
Wood
Control moisture, paintable sealants preferred
Avoid Wrong Sealant Selection
Always confirm substrate, environment, movement, and weather before application.
Download Application Manual
For full technical data and detailed instructions, please download the application manual.
Climate & Environment Solutions
Different environments demand different sealant performance.
Improper selection leads to premature aging and failure.
Seimeda provides environment-specific sealing systems for long-term global reliability.
High Temperature
Risk
Softening, cracking under heat
Solution
Heat-resistant silicone systems
Use
Curtain walls, automotive, industry
High Humidity
Risk
Hydrolysis, mold, adhesion loss
Solution
Anti-mildew silicone & PU systems
Use
Bathrooms, IG, water projects
Cold Climate
Risk
Hardening, freeze–thaw damage
Solution
Low-temperature flexible sealants
Use
Cold-region windows & façades
Salt & Chemical
Risk
Chemical attack, degradation
Solutio
Chemical-resistant silicone & PU
Use
Coastal & industrial facilities
Choose by environment
Right environment selection ensures long-term performance. Seimeda helps reduce risk across global markets.
Common Problems & Troubleshooting
Reduce Rework · Prevent Failures · Improve Project Success
Sealant failures are usually caused by improper application, unsuitable conditions, or material incompatibility rather than the product itself.
This guide helps contractors and project managers quickly identify issues and apply the right solutions—reducing delays and complaints.
Sealant Does Not Cure
Symptoms
Soft or sticky after curing time
Causes
Low temperature, high humidity, over-thick application, expired product
Solutions
Apply under recommended conditions, ensure ventilation, control joint depth
Cracking After Curing
Causes
Insufficient movement capability, poor joint design
Solutions
Select high-elasticity sealants and proper joint geometry
Adhesion Failure
Causes
Poor surface preparation, incompatibility, no primer
Solutions
Clean substrates, test adhesion, use primer if required
Discoloration
Causes
UV exposure, chemical contact, incompatible materials
Solutions
Use weather-resistant, neutral-cure sealants
Application Tips
Follow TDS strictly
Match product to environment and substrate
Control temperature, humidity, and joint design
Seimeda® Global Manufacturing Partnership
Empowering Local Excellence with Proven Manufacturing Expertise
Seimeda®’s Global Manufacturing Partnership provides end-to-end technical support for overseas factory setup, delivering a complete knowledge transfer system—from planning to production and market readiness.
Planning & Customized Factory Design
Market & investment feasibility analysis. GMP-compliant factory layout and infrastructure planning Tailor-made production line configuration for silicone & PU sealants
Core Technology Transfer
Complete process package: formulations, SOPs, QC standards. Localized formula optimization based on climate and application habits. On-site installation, commissioning, and technical training.
Production Ramp-Up & Quality System
On-site production supervision during trial and ramp-up. Full quality control system and testing laboratory setup. Guidance on local raw material sourcing.
Long-Term Partnership & Market Support
Ongoing technical upgrades and new product support. Joint market positioning and branding guidance. Fast technical response and regular audits
Seimeda® Commitment
We deliver more than manufacturing technology—we share a proven, sustainable operating system and market insight.
