DOYMA GmbH & Co
About
DOYMA GmbH & Co, part of the IWK Holding group, is a German manufacturer with over 60 years of experience specializing in sealing and fire protection systems for building penetrations — where pipes, cables, and conduits pass through walls, floors, and ceilings. The company provides a 25-year warranty on its products and supplies 2,298 registered retailers internationally from its Lower Saxony headquarters. DOYMA's sealing systems include the Curaflex Nova Uno sealing insert with ITL contact-pressure technology, the Curaflex 3000 pipe sleeve system, waste water passages, Link-Seal BC and BS316 stainless steel link chains for plastic pipe penetrations, HKD sealing systems, and cable entry seals. The Curaflam fire protection range encompasses KonfixPro fire collars that expand to seal pipe penetrations under fire conditions, Rollit ISOPro and BBRPro wrapping tapes, Manschette XSPro fire sleeves, fire protection cartridge material, and BDS cable insulation rated S30/S60/S90 for solid walls, ceilings, and light partitions. For building entries, the Quadro-Secura system provides multi-trade sealing for gas, water, electricity, and telecom lines in both new construction and renovation applications (E-Quick and Quick variants), alongside dedicated heat pump inlet and radon protection products. The Masterpiece+ program handles custom-engineered solutions for power plants, dams, and airports. DOYMA also offers BIM datasets and the Smart DOYMA digital configuration platform, with reference projects including the Elbphilharmonie Hamburg, the HoHo Wooden Skyscraper in Vienna, and the Axel Springer New Building in Berlin.
Key Products
Modular sealing inserts for wall and floor penetrations where pipes and cables pass through, providing water and gas tightness with the ITL system
Optimally designed inner-wall pipe sleeves that accommodate sealing inserts for reliable penetration sealing
Sealed passage systems for waste water pipes through building walls and floors
Stainless steel and carbon steel link chain seals for annular spaces around plastic pipe penetrations in walls and ceilings
High-performance sealing systems for demanding building penetration applications
Sealed cable penetration systems for electrical and data cables through building envelopes
Fire protection collars that expand in a fire to seal pipe penetrations and prevent fire and smoke spread through walls and ceilings
Fire-resistant wrapping tapes for insulating combustible pipes at penetration points to maintain fire compartment integrity
Intumescent cartridge material that expands under fire conditions to seal pipe penetrations
Cable insulation systems providing 30, 60, or 90 minutes of fire resistance for cable penetrations in solid walls, solid ceilings, and light partitions
Fire protection sleeve for flammable pipes that activates during fire to prevent flame and smoke propagation
Multi-trade sealing systems for gas, water, electricity, and telecom lines entering buildings, including E-Quick and Quick variants for renovations
Sealed penetration systems designed for heat pump pipe entries through building envelopes
Specialized sealing products that provide reliable protection against radon gas infiltration through building penetrations
Custom-engineered sealing solutions for demanding building types with unique penetration requirements
Online product selection and configuration tool for specifying the correct sealing and fire protection products
Building Information Modeling data for digital planning and integration of DOYMA products into construction projects
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