Description
SDI Stamp Seal C51 is a high-performance, concentrated solvent-based acrylic sealer designed for decorative stamped, colored, and textured concrete surfaces. This professional-grade formula provides superior protection, enhances color, and delivers a rich, low-gloss to medium-gloss finish with excellent durability.
- Hazmat Number: UN1263 (Paint Related Material, Flammable Liquid Class 3)
- Key Features & Benefits
- Concentrated formula – can be used full strength or thinned with Aromatic 100 for desired gloss and build
- Excellent color enhancement and UV protection for stamped and colored concrete
- Forms a tough, durable film that resists water, oils, stains, and abrasion
- Breathable yet highly resistant to efflorescence, spalling, and surface deterioration
- Low to medium gloss finish that highlights the beauty of decorative concrete
- Superior adhesion and flexibility to prevent cracking and peeling
- Product Details Solvent-based concentrated acrylic sealer (C51 formulation). High VOC content (not exempt). Can be thinned with SDI Aromatic 100 solvent as needed.
- Coverage First coat: 200–300 sq ft per gallon (undiluted). Second coat: 300–400 sq ft per gallon. Coverage varies significantly with surface porosity and texture. Two thin coats are recommended for best results.
- Product Use Case Ideal for sealing and protecting stamped concrete, colored concrete, exposed aggregate, and other decorative horizontal concrete surfaces such as patios, driveways, pool decks, and walkways. Provides long-lasting protection and enhances the natural beauty of the concrete. Solvent-based flammable product – Recommended for outdoor use only or in well-ventilated areas with proper safety precautions. Use with extreme caution indoors due to high flammability and strong vapors.
- Method of Application Stir thoroughly before use. Apply two thin, even coats using a solvent-resistant roller (3/8″ nap recommended) or solvent-safe sprayer. Allow first coat to dry 1–2 hours before applying the second coat. Work in small sections to maintain a wet edge. Avoid puddling. Keep away from open flames, sparks, or ignition sources. Allow 24 hours before light foot traffic and 72 hours before heavy use or vehicle traffic. Protect from rain for at least 4–6 hours after application.
Important Shipping Notice – Hazardous Material Due to the hazardous nature of this solvent-based product (flammable liquids class, per DOT regulations), SDI Stamp Seal C51 Concentrated Acrylic Sealer 5 Gal. We cannot ship this item via UPS, FedEx, or standard parcel carriers. We do have freight rates at checkout. Thank you for understanding—this policy keeps everyone safe and complies with federal hazardous materials shipping rules.





