DOWSIL™ R41 Cleaner Plus is a ready-to-use cleaner for cleaning and preparing non-porous surfaces before the application of Dow silicone sealants.
The product is used for preparing glass, metal profiles, plastics and other non-porous surfaces in window, façade, structural glazing and other B2B applications. DOWSIL™ R41 Cleaner Plus helps activate the surface and support adhesion build-up during silicone curing.
Packaging
1 l can
5 l canister
R40 or R41 – selection guide
Choose DOWSIL™ R40 Universal Cleaner when a universal cleaner is required for cleaning non-porous substrates before applying Dow sealants.
Choose DOWSIL™ R41 Cleaner Plus when cleaning and additional surface preparation are required in one step to support adhesion with Dow silicone sealants.
Important to know
DOWSIL™ R41 Cleaner Plus is not recommended for use in combination with other primers such as DOWSIL™ 1200 OS Primer or DOWSIL™ Primer-C. The product is designed for applications where only cleaning is required; however, compared with a standard cleaner, it can help improve adhesion build-up during silicone curing. Suitability for the specific application should be evaluated before use, and the manufacturer’s TDS and SDS documentation should be followed.
Need help selecting the right cleaner or primer?
Glasspro represents the DOW product portfolio and can help select the right cleaner, primer and surface preparation solution according to the substrate, sealant and project conditions.
📄 Technical documentation
Download the product TDS / SDS documents and product guide for detailed technical and safety information.
📩 Inquiry
For pricing, product availability, packaging, technical documentation and B2B supply across the EU and other export markets, please contact us.

