A moisture-cure sealant is not one chemistry. It combines a base polymer, an adhesion promoter, a water scavenger, a crosslinker and a catalyst, and its performance depends on how well those components are matched. The base polymer sets modulus and elongation. The silane package around it decides how evenly the sealant cures, how it bonds and how long it stays stable in the cartridge.
How to build the formulation
- Base polymer: low-modulus grades such as Manta MS27 for movement joints, higher-modulus grades such as Manta MS7500 for semi-structural adhesives. The MS Polymer Selection Guide compares them by viscosity, modulus and activity.
- Adhesion promoter: amino silanes such as Manta A110 and Manta A112, or epoxy silanes such as Manta E560 where an amino group does not suit the system.
- Water scavenger: Manta V31 protects package stability by reacting with residual moisture in fillers and plasticizers.
- Crosslinker: silanes such as Manta 931 adjust network density and modulus.
- Catalyst: tin-free catalysts can be used with many of the MS polymer grades, as noted on each TDS. Organotin catalysts such as Manta CAT-CTHMTS remain available for systems that use them.
- End cappers for polymer makers: isocyanate silanes such as Manta S310 and Manta S320.
One inquiry can cover every raw material in the formulation, with samples, technical documents, quotation and shipment handled together.
Need a finished product rather than raw materials? See our custom MS adhesives and sealants service.
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Frequently Asked Questions
What raw materials does a moisture-cure MS sealant need?
A base polymer, an adhesion promoter, a water scavenger, a crosslinker and a catalyst. The base polymer sets modulus and elongation. The silane package around it decides how evenly the sealant cures, how it bonds and how long it stays stable in the cartridge.
Which polymer suits movement joints, and which suits semi-structural adhesives?
Low-modulus grades such as Manta MS27 are used for movement joints, and higher-modulus grades such as Manta MS7500 for semi-structural adhesives.
Can one inquiry cover the whole formulation?
Yes. One inquiry can cover every raw material in the formulation, with samples, technical documents, quotation and shipment handled together.
Talk to our technical team
Tell us your application, target properties and estimated quantity. We will suggest grades and arrange documents or samples.