obduramus Umwelttechnik GmbH
About
obduramus Umwelttechnik GmbH, based in Schömberg, Baden-Württemberg, Germany, develops and manufactures stainless steel pipe rehabilitation sleeves for trenchless sewer repair. Founded in 2012, the company's core technology — the Circum system — uses a patented external mechanical lock to press an EPDM rubber seal against the inner pipe wall via inflatable packer. Unlike internal locks, this external lock lies flat against the pipe wall, minimizing cross-section reduction and eliminating debris-snagging edges. obduramus offers six product lines covering DN 150 through DN 4,000. The Circum MINI (DN 150-800) and Circum LEM (DN 150-800) are compression seals for longitudinal cracks, radial cracks, leaky joints, and missing wall sections, with the LEM variant designed for connecting and sealing liner ends to pipes and structures. The Circum-FLEX (DN 150-600) accommodates pipes with positional deviation and offset. The Circum-DRAIN (DN 150-800) is tailored for drainage pipe rehabilitation. The VIP-WECO (DN 600-3,500) handles large-diameter applications including gapless joints, root ingrowth, and liner bonding. The ASCOPA (DN 1,000-4,000) is an expanding seal for walkable-pipe joint gaps and conical sockets. All Circum products are DIBt-approved with DIN leakproofness certification, use same-grade stainless steel throughout to prevent galvanic corrosion, and install in minutes without chemicals.
Key Products
Stainless steel compression seal with external lock for trenchless repair of DN 150-800 pipes, addressing longitudinal cracks, radial cracks, leaky connections, missing wall sections, and abandoning unused laterals.
Stainless steel compression seal specifically designed for connecting and sealing liner ends to pipes and structures, protecting vulnerable liner ends in DN 150-800 pipes.
Flexible stainless steel compression seal for rehabilitating pipes with positional deviation and offset in DN 150-600 pipes, accommodating misaligned pipe sections.
Stainless steel drainage sleeve designed for trenchless rehabilitation of drainage pipes in DN 150-800 diameter range.
Large-diameter stainless steel compression seal for DN 600-3,500 pipes, handling gapless joints, leaky joints, radial cracks, missing wall sections, liner bonding, and root ingrowth.
Expanding seal for sealing pipe joint gaps in accessible (walkable) pipes DN 1,000-4,000 and conical socket gaps, designed for large-diameter sewer rehabilitation.
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