MS Sealant
Technical overview
MS-polymer sealants for flexible sealing and bonding
MS polymer is a moisture-curing, silane-modified polymer technology used in elastic sealants and adhesives. Depending on the exact formulation, products in this family can combine flexible movement with bonding to common construction substrates and may be paintable. These are formulation-specific properties, not universal guarantees.
How the material works
- One-component moisture curing is common in this family
- Elastic sealing and bonding functions can be combined in one formulation
- Low-odour, solvent-free, or isocyanate-free claims must be confirmed for the exact product
- Paintability and weathering performance remain grade-specific
What determines the right grade
- Is the task a movement joint, perimeter seal, or bonded assembly?
- Substrate pair and surface condition
- Joint geometry and expected movement
- Interior or exterior exposure and paint compatibility
Potential uses — only where the product grade is documented
- Perimeter sealing around compatible window and door frames
- Connection and expansion joints where the grade supports the required movement
- Sealing between compatible concrete, metal, wood, glass, ceramic, or selected plastic elements
- Elastic bonding and assembly where the product documentation permits it
“Hybrid,” “AST polymer,” and “MS polymer” are not automatically equivalent names. Confirm the actual polymer chemistry and current TDS before specification.
Josoor can coordinate the substrate, joint, exposure, and documentation review, then offer an MS-polymer grade only when its chemistry and application are confirmed.
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