Description
Flexiseal Primer 20L is a heavy-duty, industrial-grade solution designed for large-scale pipeline corrosion prevention and dielectric protection. This 20-litre pail is ideal for major infrastructure projects, providing long-lasting surface preparation and adhesion for the Flexiseal range of protective tapes.
Formulated with high-quality bitumen modified with rubber and resins, the primer delivers a uniform coating over steel, plastic, brick, timber, and concrete. It’s engineered to support long pipe runs, extensive weld zones, and critical junctions where water ingress or electrical interference must be mitigated.
Whether used on buried pipelines, gas or water distribution networks, or structural steelwork, Flexiseal Primer 20L ensures a consistent and cost-effective base for your coating system. Apply via brush, roller, or spray for fast, efficient coverage across large surfaces.
Key Features
- High-volume container for maximum coverage
- Excellent adhesion across multiple materials
- Supports long pipe runs and full-system applications
- Solvent-based and fast-drying for rapid project timelines
- Industrial-grade protection from corrosion and dielectric interference
*Substrates must be dry before priming. Highly flammable in liquid form. Use in ventilated areas only.
All Options Available
06-FSPRM4 | Flexiseal Primer 4L |
06-FSPRM20 | Flexiseal Primer 20L |
Applications
- Large infrastructure projects
- Pipeline networks and utilities
- Full-length wel joint sealing
- Below-ground corrosion protection systems
Resources

Meet the Team
Raymond Chow has been involved with the geosynthetics industry for over 15 years. Graduating with a First Class Honours degree in Civil Engineering at the University of Sydney, Raymond specialiSes in retaining wall designs, soft ground improvement, channel and slope protection, and on-site storm water management.
Raymond has been on various technical committees addressing geosynthetics, including testing, specification and durability issues.
Join our next session by emailing us at technical@polyfabrics.com.au