SpECtite Swellseal Polybar


SpECtite Swellseal Polybar is a hydrophilic
waterstop based on synthetic rubber for use in
construction joints subject to saline water
penetration. SpECtite Swellseal Polybar exhibits
good resistance to a wide range of chemicals (see
Chemical Resistance below) and presents a unique
characteristic of swelling many times its dry volume
when in contact with ground/saline water to form an
impenetrable gel capable of resisting hydrostatic
pressures of up to 60 meters.

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Technical Details

SpECtite Swellseal Polybar is a very effective waterstop seal in the following situations:
• Construction joint
• Pipe and cable penetrations
• New to existing concrete
• Sealing irregular concrete surfaces
. Quick and easy to install – does not require special intersections, on-site welding or jointing.
• Suitable for ground/saline water conditions.
• Good chemical resistance
• Supplied in 2 sections depending on the size of the structure (see Sizes & Packaging below).
• Safe and odour-free
• Totally flexible
• Surface fixed – no pre-formed chases required
• Seals localised honeycombing and minor fractures

Specific gravity @25°C 

Resistance to hydrostatic pressure 

6 bars 

Swelling capacity (3.5% saline solution) 

Hardness – Shore A 


Tensile Strength 



Service temperature 

-20ºC to +75ºC 
Bending radius at corners 



Chemical Resistance 

Resistant to a wide range of common chemicals. For fuels, oils and solvents, please contact SPEC Technical Department 

Surface Preparation
All surfaces to which SpECtite Swellseal Polybar is to be applied should be clean and free of standing water. Any loose or flaking concrete must be removed. (The preferred practice of scabbling joints is recommended).

Uncoil a length of SpECtite Swellseal Polybar and apply onto the concrete surface, noting that it must be positioned inside the reinforcement cage with a minimum concrete cover of 75mm.

Press SpECtite Swellseal Polybar firmly into place to ensure it covers any surface undulations.

In vertical installations work from the base up to prevent any deformation or elongation.

Cut the ends of adjoining lengths of SpECtite Swellseal Polybar with a sharp tool to ensure a clean and square cut and press together for a close butt joint. Do not overlap.

Fix SpECtite Swellseal Polybar in place using nailing guns, with nails at 300mm spacing approximately.

Where SpECtite Swellseal Polybar is to be installed on metal or plastic pipes, this can be achieved with a good quality contact adhesive.

Do not use any damaged, deformed or swollen bars.
SpECtite Swellseal Polybar is supplied in 2 standard sizes:
• Size 20 x 10mm x 5m long for structures up to 150mm thick.
A cardboard box contains 9 x 5m coils.
• Size 20 x 20mm x 5m long for structures over 150mm thick.
A cardboard box contains 9 x 5m coils.
Contact us for more info.

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SpECtite Swellseal Polybar

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