In the construction and renovation industry, choosing the right silicone sealant is essential for long-term performance and aesthetic results. One critical distinction professionals must understand is the difference between white oil-based sealants and 100% silicone sealants.
At Hilkem, we help customers make informed decisions backed by industry expertise and cutting-edge products. Our flagship product, ST-2441, represents a new generation of 100% silicone sealants that deliver superior durability, cleanliness, and environmental safety.
Understanding the Basics
What Is White Oil in Silicone Sealants?
White oil (mineral oil) is commonly used in low-cost silicone sealants to enhance spreadability and reduce production costs. While convenient for short-term applications, it can lead to oil migration, especially on porous surfaces like natural stone or concrete, causing unsightly staining and surface degradation over time.
Typical Issues with White Oil-Based Sealants:
● Oil bleeding or migration
● Staining on porous surfaces
● Reduced UV/weather resistance
● Shorter lifespan in outdoor use
What Makes 100% Silicone Sealants Better?
100% silicone sealants, like Hilkem ST-2441, are formulated without white oil or plasticizers. Instead, they use 100% silicone or modified polymer bases that offer improved performance, stronger adhesion, and resistance to environmental stress.
Benefits of 100% Silicone Sealants:
✅ No staining: Safe for stone, concrete, and other porous materials
✅ Long-lasting: Excellent weathering, UV, and aging resistance
✅ Low shrinkage: Maintains shape and elasticity over time
✅ Eco-friendly: Low VOC and compliant with global environmental standards
Spotlight on Hilkem ST-2441: High-Performance 100% Silicone Sealant
Hilkem ST-2441 is a professional-grade, 100%, neutral-cure silicone sealant designed for both interior and exterior use. It is especially recommended for natural stone, glass curtain walls, aluminum panels, and façade systems where cleanliness, strength, and longevity are critical.
Key Features of ST-2441:
100% 100% formula: No risk of oil bleeding or surface damage
Safe for porous materials: Ideal for marble, granite, and concrete
Superior weather resistance: Withstands UV, rain, and extreme temperatures
Neutral cure system: Non-corrosive to sensitive substrates
Environmentally safe: Low VOC content, compliant with international green standards
Where to Use Hilkem ST-2441
| Application Area | Suitability |
| Natural stone facades | ✅ Excellent |
| Glass curtain walls | ✅ Excellent |
| Concrete & masonry joints | ✅ Excellent |
| Bathrooms & kitchens | ✅ Good |
| Metal & aluminum frames | ✅ Excellent |
| Painted or coated surfaces | ✅ Safe |
Why Choose Hilkem?
At Hilkem, we are more than a manufacturer—we are a solutions provider. With years of experience in sealant technology, construction materials, and export support, we ensure our products meet the highest performance and safety standards in the industry.
In-house R&D
Reliable global shipping
Technical support available in multiple languages
Customization available for regional requirements and private labeling
Ready to Make the Switch?
Avoid common pitfalls like oil bleeding and surface staining. Choose Hilkem ST-2441, the professional’s choice for long-term sealing solutions.
www.hilkem.com
