OSI Sealant + Adhesive Range — Quick Reference
OSI = ESTABLISHED sealant + construction adhesive brand — quality POLYURETHANE + HYBRID + ACRYLIC-based products performing in AU construction + workshop + maintenance applications.
| OSI Product | Best For |
|---|---|
| OSI PU Sealant | Construction + paintable + flexible joints |
| OSI Acrylic Sealant | Internal painting + decorative |
| OSI Hybrid Polymer (MS) | Premium — paintable + multi-substrate |
| OSI Construction Adhesive | Heavy bonding + building work |
| OSI Specialty Sealants | Specific application + see sealants |
Critical: Match sealant chemistry to SUBSTRATE + paintability + flexibility requirement. Surface clean + dry essential. Brand: OSI. Companion: sealants, multi-purpose sealants, adhesives + sealants.
OSI Sealants and Adhesives
OSI is a long-established sealant and construction adhesive brand, known for quality polyurethane, hybrid, and acrylic-based products that perform in conditions standard caulks cannot. AIMS Industrial supplies the OSI range for trade and industrial customers working on construction, fabrication, and maintenance applications where the joint really has to hold.
The OSI categories at AIMS
- Polyurethane sealants — flexible, paintable, durable joint sealants for masonry, concrete, and dissimilar materials
- Hybrid sealants — silane-modified polymer chemistry that combines flexibility with paintability and adhesion
- Construction adhesives — heavy-duty bonding for structural and decorative applications
- Specialty sealants — solar/UV-resistant, low-temperature, and weather-extreme grades
Where OSI earns its place
OSI is specified where joint movement, weathering, and substrate variety are challenging. Polyurethane chemistry handles wider movement than acrylics or silicones in most weathering applications, and the hybrid range is increasingly the default for window, door, and panel sealing where adhesion to coated and laminated substrates matters.
Application advice
OSI products are best applied to clean, dry, properly prepared surfaces. Most sealants need a primer for porous substrates and on dissimilar materials — check the product data sheet for specifics. Tooling within the working time is essential for a clean finish; some OSI products skin quickly and don't tolerate late tooling.
Need help matching an OSI grade to a specific substrate, joint width, or service environment? contact our team — we'll review the product data sheet with you and confirm the right grade.