Primer specific for polyurethane sealants

Code: PRS.0102

Components: 1

Appearance: Liquid

A polyurethane bonding primer for preparing the subsequent filling of the joints with single-component polyurethane sealants in a cartridge (PROTECH FLEX or PROTECH SIGILFLEX MONO) or a two-component product (EG 91) on concrete and masonry surfaces.

Linee di appartenenza

General characteristics


Shelf-life: 6 months


Temperature of use: +10 / +35 °C


Density: 0.95 (± 0.01) kg/dm³


Pot-life: 60 min


Flammable material


Use wearing protective gloves


Solvent-based product

Technical specifications

Concrete adhesion (direct traction)

1.5 MPa

Available colours

- Amber

Packaging and dimensions

- Canister 1 kg


Approximately 0.02 kg of PROTECH FLEX PRIMER for every linear metre of joint to be treated.

Use fields

Preliminary reinforcing impregnation of concrete surfaces, forming walls of flooring and roofing joints, prior to sealing it with polyurethane and epoxy-polyurethane sealants.

Preparation of supports

The application surfaces should be clean, free of incrustations, crumbling and non-adhering parts, dust etc.

Use method

Apply PROTECH FLEX PRIMER, using a brush with short bristles, on the walls of the joint to be sealed.

It is appropriate to provide for the insertion in the joint, whatever its nature and the specific foamed polyethylene kerb FILTENE FONDOGIUNTO, of the appropriate size for the joint to be sealed.

Application methods

- Brush

Tool cleaning

- Nitro thinner

Permitted supports

- Cement-based or lime-based mortars

- Concrete

- Drywall

- Fiber-cement

- Floor screed

- Metal surfaces

- Plasters

- Plastic

- Prefabricated concrete

- Tiles

- Wood

Warnings, precautions and Ecology

Warning: it is a highly flammable material.

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