Pipe repairs using sleeves
Gapless sealing
Obduramus Umwelttechnik GmbH had developed a locking mechanism for Circum products in order to quickly and effectively repair pipe connections from DN 150. The system is flexible and manufactured using high-quality materials. Lock rings and/or stainless steel sleeves are placed inside the EPDM seals and are pressed against the pipe walls using specially developed and patented tension locks. This seals the damage permanently and reliably.
Their benefits:
Permanent sealing purely based on the principles of mechanics
Effective and sustainable repairs
Stainless steel sleeve manufactured using the same grade of steel, resulting in no corrosion
Fast and simple installation saves time
Installation with no environmentally harmful lubricants
The stainless steel sleeve with external lock
Circum MINI
- Compression seal
- Pipe diameter DN 150 – DN 800
- Application: Longitudinal cracks, radial cracks, leaky pipe connections, missing wall sections, closing of unused laterals, replacing missing formwork behind inliners, part formation
Find out more


Circum LEM
- Compression seal
- Pipe diameter DN 150 – DN 400
- Application: Connecting and sealing liner ends on pipes and structures, protecting vulnerable liner ends.
Find out more
ASCOPA rehabilitation hose
- Expanding seal
- Pipe diameter DN 1000 – DN 4000
- Application: Sealing socket gaps in accessible pipes, conical socket gaps
Find out more
