Heavy-duty rubber profiles and extrusion seals for architectural curtain walls, structural expansion joints, and infrastructure bridging. Engineered to resist severe weather, ozone, and thermal movements.
Modern architectural structures require sealing solutions that can handle significant displacement, wind loads, and thermal expansion while maintaining long-term watertightness. Onaseal designs and produces heavy-duty EPDM and silicone extrusion weatherstrips specifically for curtain walls, structural glazing, expansion joints, and bridge construction. Our compounds are optimized for high tensile strength, extreme UV/ozone resistance, and structural integrity.
| Material | High-grade EPDM (Dense & Sponge) / Silicone / TPV |
| Hardness | Dense EPDM: 50 to 80 Shore A; Sponge EPDM: 0.5-0.7 g/cm³ |
| Tensile Strength | Up to 12 MPa for high-performance architectural projects |
| Color | Black, Grey, custom colored building profiles |
| Weathering | Excellent UV, ozone, and chemical aging resistance |
| Service Life | Designed for 20+ years of severe outdoor exposure |
Specially formulated EPDM compound withstands decades of extreme thermal cycling, heavy rain, and solar UV.
Maintains exceptional elastic recovery and sealing pressure, preventing leaks caused by building shifts.
We manufacture extra-large, complex, or co-extruded dense/sponge rubber geometries per engineering drawings.
Superior physical strength prevents tearing or splitting under structural expansion joint movements.
Our premium architectural-grade EPDM rubber seals are designed to last over 20 years. They are specifically compounded with advanced stabilizers that resist ozone degradation, solar radiation, and thermal aging.
Yes. We can supply dense rubber in hardnesses ranging from 50 to 80 Shore A, or sponge rubber in various densities to match your specific compression force and sealing requirements.
Yes, we can provide material test reports covering tensile strength, elongation, tear resistance, compression set, and accelerated aging upon request, ensuring compliance with construction project specifications.
Automotive weatherstrip and complex extrusion section photos are displayed without changing the cross-section shapes.
Flexible edge protection strips for automotive, equipment and cabinet applications.
Section-based extrusion solutions for sealing, protection and cushioning functions.
Vehicle sealing systems for doors, trunks, hoods and glass channels.
