Sealing Technology
SEBflex® Coated waterstops
SEBflex® consists of coated individual elements. For concrete layers of only 3 cm, the special coating has been successfully tested to provide resistance against water columns of up to 20 metres. Any constructions joints, horizontal or vertical, when subject to either pressurised or non-pressurised water, can be sealed securely and reliably against water columns of up to 20 m using SEBflex®. SEBflex® has been tested and certified in accordance with the new WU directive for use in buildings rated in resistance category 1 and utilisation category A.
The installation instructions and excerpts from the WU directive issued by the
DAfstb (German Committee for Reinforced Concrete) should be consulted.
With the new add-on SEBflex® “2.0” we guaranty that the so called SEBflex® article has been proofed on 2 bar by the German MPA.
Advantages:
- quick and secure sealing of all construction joints without the expense of a concrete upturn beam
- quick and simple installation of the SEBflex® elements
- no special tools required
- provides water resistance against water columns of up to 20 m
- simple and secure connection of all the individual elements and points of intersection by just pressing the SEBflex® special coating together
- can also be easily connected to expansion joint and construction joint tapes via a special connector
- SEBflex® sealing system for planners of WU buildings
SEBflex® Bentonite Swelling Tape & Accessories
SEBflex® bentonite swelling tape is certified by MPA. It is made out of sodium bentonite and is used to seal cracks or construction joints reliably and permanently in watertight buildings.
How to use
SEBflex® bentonite swelling tape is perfectly qualified for range between low and high water level. You can easily and fast mount the SEBflex® swelling tape using the SEBflex® mounting glue, the SEBflex® mounting grid and/or the SEBflex® mounting nail. It will ensure a permanent and reliable seal up to 2 bar against sultry water.
Article-No. | Product | Dimensions | Units |
---|---|---|---|
8QDSB2025 | SEBflex® SEBflex® Bentonite Swelling Tape | Ø 20 x 25 mm | Box with 4 rolls/ roll length: 5 m |
8QDSBG | SEBflex® Bentonite Swelling Tape grid | Length: 100 cm | Set of 20 pcs. |
8QDSBN | SEBflex® Bentonite Swelling Tape nail | Length: 40 mm | Box with 300 pcs. |
8QFDKL | SEBflex® Bentonite Swelling Tape Glue / swelling paste on bentonite basis, one cartride (310 ml) suffices about 8-10 m | Box with 18 cartridges (310 ml) | |
8QFDKLb | SEBflex® Bentonite Swelling Tape Glue for Betonite- and EPDM Swelling-Tapes cartride (310 ml), suffices about 8-10m | Box with 18 cartridges (310 ml) |
Additional dimensions, grades and designs available on request
Products may differ from the images
SEBflex® Rib Mesh
Shuttering
Convincing Advantages:
- Cost-saving and fast shuttering of the working joints
- Can be used universally as a lost formwork in floor slabs, ceilings and walls
- Better bonding between several concrete sections due to special structure
- Dimensionally stable even when installed
- Lower concreting pressure compared to closed formwork
* DIN EN 10051 / DIN EN 10088-2 / DAfStb Directive (WU Directive) 10.2 (2) to (6)
** DIN EN 10130 Technical delivery conditions from the material
Further dimensions, qualities and finishes on request
Products can be different than pictured

SEBflex® Rib Mesh 4mm
Article-No. | Material/ Strength | Dimensions | Packaging | |
---|---|---|---|---|
L x H | Height | |||
8SFL | galvanised/ 0,25 mm | 250 x 60 cm = 1,5 m² | 4 mm | 1 Pack 20 Pieces= 30 m² 1 Palette 30 Pack = 900 m² |
* DIN EN 10051 / DIN EN 10088-2 / DAfStb Directive (WU Directive) 10.2 (2) to (6)
** DIN EN 10130 Technical delivery conditions from the material
Further dimensions, qualities and finishes on request
Products can be different than pictured
SEBflex® Rip Mesh 10mm
Article-No. | Material/ Strength | Dimensions | Packaging | |
---|---|---|---|---|
L x H | Height | |||
8SM3 | galvanised/ 0,30 mm | 250 x 60 cm = 1,5 m² | 10 mm | 1 Pack 20 = 30 m² 1 Palette 30 Pack = 900 m² |
* DIN EN 10051 / DIN EN 10088-2 / DAfStb Directive (WU Directive) 10.2 (2) to (6)
** DIN EN 10130 Technical delivery conditions from the material
Further dimensions, qualities and finishes on request
Products can be different than pictured
SEBflex® Rip Mesh 21mm
Article-No. | Material/ Strength | Dimensions | Packaging | |
---|---|---|---|---|
L x H | Height | |||
8SHY3 | galvanised/ 0,30 mm | 200 x 45 cm | 21 mm | 1 Pallet 200 Pieces 180 m² |
8SHY4 | galvanised / 0,40 mm | 200 x 45 cm | 21 mm | 1 Pallet 100 Pieces 90 m² |
8SHY5 | galvanised / 0,50 mm | 200 x 45 cm | 21 mm | 1 Pallet 100 Pieces 90 m² |
* DIN EN 10051 / DIN EN 10088-2 / DAfStb Directive (WU Directive) 10.2 (2) to (6)
** DIN EN 10130 Technical delivery conditions from the material
Further dimensions, qualities and finishes on request
Products can be different than pictured
SEBflex® Shuttering Elements
SEBflex® shuttering element (ABS) and waterbar cage for the shuttering of working joints in slabs, walls and ceilings.
The profiling of the shuttering elements fulfills the requirements of DIN 1045-1 to the “toothed” type of joints. The SEBflex® shielding elements are supplied ready for installation at the desired heights of 80 mm to 1500 mm, in the standard length of 2400 mm.
The cut-off plate has a diamond-shaped profiling, which achieves excellent bonding with the concrete.
Convincing Advantages::
- Ready for delivery
- Joint “toothed” to DIN 1045-1
- Type F – Waterproof up to 5 bar AbP 2 bar with test report
- Element height 150 mm
- Standard length 2400 mm
- Dimensions up to 2000 mm
- SEBflex® ABS with and without sealing elements
SEBflex® Shuttering Element Rough Joint

Dimensions: 80 – 199 mm
SEBflex® Shuttering Element Toothed Joint

Dimensions: 200 – 1000 mm
SEBflex® Waterbar Cage

Dimensions H/W: 120/130 mm, 120/100 mm, 150/130 mm, 150/100 mm
Steel joint-sealing sheets
High quality joint-sealing sheets made from black, bright and galvanised sheet steel. Complies with DIN* standards and the WU directive*. Sheets in standard dimensions certified for use in industry, metalworking and construction.
Advantages:
- High-quality product, certified as a manufacturing material by DIN **
- Versatile
- Certified as water-resistant in accordance with the WU directive*
- Special dimensions available for tunnels and engineering projects
- High level of stability compared with PVC and elastomer joint-sealing tape

Joint-Sealing Sheets – Blank Steel (Black)
Dimension: 1,0 – 2,0 mm x 150 – 300 mm
Ring Size: 30 m
Joint-Sealing Sheets – Galvanised Steel
Dimension: 0,6 – 2,0 mm x 100 – 300 mm
Ring Size: 30 & 50 m
Joint-Sealing Sheets – Stainless Steel
W.-NR: 4301 (V2A)
W.-NR: 4404 / 4401 (V4A)
on request
SEBflex® Sealing Collars
A Secure Hydrostatic Seal
The SEBflex® Sealing Collar is equipped with two stretch tapes made of stainless steel. This prohibits the water flow rate through the broad collar, when the pipe penetrations and lightning wires are embed in concrete. Thus no moisture along the pipe / the wire can penetrate into the building.
The SEBflex® Sealing Collars are certified by MPA!

Available Sizes:
Outer Pipe Dimensions from: 20 mm to 1400 mm
Outer Connection lug from: 18 mm to 1450 mm

Applicable for wires made for Foundation Earthing
Available Sizes:
7 mm to 10 mm
30 x 2 mm to 30 x 5 mm