Rubber waterstop FLOWSTOP 20 x 5 mm

article number 010040

Rubber waterstop FLOWSTOP

test of durability CE Water pressure test Tested quality

For sealing construction joints and penetrations in concrete structures.

With a proven ability to withstand a pressure of 8 bar, FLOWSTOP satisfies the conditions of the German WU directive on water-impermeable concrete structures for a continuous pressure of 2 bar, as well as international standards that require high pressure resistance.

  • General Building Supervisory Test Certificate
  • Suitable for zones with frequently varying water levels
  • Good chemical resistance
  • Dimensionally stable
  • Maximum pressure of 8 bar with size 20 x 5 mm
  • Long-term testing for more than 250 days
  • Easy installation with the POWER swelling tape adhesive
  • No foundation curb required

available in large quantities

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article number:
customs tariff number:
packing unit:
sales quantity unit:
120 m
weight per:
Cart = 18 kg





40 - 50 Shore A DIN 53505-A


up to 300% DIN 53571

increase in volume:

up to 600%, in neutral water (ph7)

up to 100 %, in salt water

test certificate/ approval:

Test report (abP)
MFPA Leipzig
Nr.: P-SAC 02 / 5.1 / 13-515

Test report acid resistance
MPA Braunschweig
(1200/442/15d)-Pan of 28.10.2015

suitable for zones with frequently varying water levels:


corresponds to:

 Utility class A for the wear classes 1 and
 2 in accordance with the WU guideline

resistant to:


  • Diluted acids and alkalis
  • Salt water
  • Methane gas
  • Radon
  • Liquid manure and slurry
  • Fermentation mash and biogas
  • Concrete alkalinity
  • Mineral oils
  • Fuels (Petrol, Diesel, Kerosine)
6 rolls à 20 m
120 m per carton

36 cartons par palette

thermal scope of application:
approx. -30°C up to +60°C
up to max. 8 bar ( 80m water column )
Store in undamaged and unopened original packaging in a dry place out of direct sunlight.
Can be disposed of at municipal waste landfill sites, taking into account the local waste disposal regulations.
20 x 5 mm

Only the system-compatible POWER swelling tape adhesive is suitable for installation.
FLOWSTOP High-pressure swelling tape must not be installed using swellingtape grid!

The substrate must be clean, dry, and free ofloose particles. Apply the POWER swelling tape adhesive in a uniform bead (width 8-10 mm) out of the cartrige onto the surface.

Once the POWER swelling tape adhesive has been applied in the centre of the joint, the FLOWSTOP High-pressure swelling tape is placed on the adhesive and gently pressed on, moving it slightly back and forth, crosswise to the longitudinal axis. When the tape is fixed, the adhesive should slightly ooze out on both sides. This guarantees a complete fixation.

A concrete cover of 8cm must be ensured. FLOWSTOP High-pressure swelling tape must always be installed inside a two-sided connection reinforcement.

Both, straight and angle joints need to be butt jointed. The joint areas must be form-fit in order to avoid any discontinuity in the system.


Angle joint

Straight butt joint

FLOWSTOP in precast wall

Download DWG

Download PDF

FLOWSTOP in in-situ concrete

Download DWG

Download PDF

POWER SWELLING TAPE ADHESIVE installation situation flowstop

Download DWG

Download PDF


suitable accessories

POWER swelling tape adhesive

Cartridge 310 ml high-pressure adhesive 1 cartridge = approx. 8 m   single-component solvent-free sealant for bonding of M...

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