Manufacturer and specialist company for sealing technology: supplying, repairing and testing mechanical seals.
LuWo-Seal Dichtungstechnik GmbH
MunichNew on Amplifa
Sealing technology from Munich since 1980
LuWo-Seal Dichtungstechnik GmbH is an owner-managed manufacturer and specialist company for sealing technology based in Munich, founded in 1980. The company supplies mechanical seals, cartridge seals, O-rings and elastomers, flat gaskets, expansion joints as well as corrugated hose and PTFE hose, plus aseptic valves, compressor valves and pressure gauges. Its core area is repair: in its own workshop, mechanical seals of all common makes are disassembled and inspected, silicon carbide (SiC) sliding surfaces are lapped and polished, elastomers and springs are replaced, and the units are assembled to size ready for installation. Special versions and equivalents of all common makes are also manufactured in-house after measurement. Materials range from NBR, FKM, EPDM, HNBR and FFKM to graphite, fibre material and PTFE; FDA-compliant grades are available. Customers come from the food and dairy industry, pharmaceuticals, chemicals, mechanical and plant engineering, water and wastewater technology, HVAC and refrigeration technology, energy supply and automotive supply. The location is Langwieder Hauptstraße 2–4 in Munich; deliveries are made to Germany, Austria and Switzerland.
- Site
- München
- Processes
- Supplying mechanical seals (new parts, spare parts, special versions, equivalents of all common, Repair / overhaul of mechanical seals (condition assessment free of charge, repair after approval), Lapping and polishing of sliding surfaces, Repair of rubber bellows seals (elastomer bellows replacement), Repair of single-spring seals (corrosion/breakage testing, reworking of sliding surfaces), Repair of multi-spring seals (also cartridge and API versions), Repair of wave spring seals, Repair of metal bellows seals (leak testing of the bellows)
- Materials
- NBR, FKM / FPM, EPDM, HNBR, FFKM, AFLAS, Neoprene (CR), VMQ silicone
- Certificates
- DIN EN ISO 9001:2015
- Founded
- 1980
- Industries
- Food & dairies, Pharmaceuticals & hygiene, Chemical industry, Mechanical & plant engineering, Water & wastewater technology, Maintenance & technical services
- 01
Submit an enquiry or send in a sample / part
- 02
Technical inspection and free condition assessment
- 03
Proposed solution (repair, new part or custom solution)
- 04
Overhaul or manufacture in the Munich workshop (lapping, calibrating,
- 05
Final inspection, leak testing and certificates
- 06
Labelling and documented return delivery
Locations
Munich
DEHead office, workshop and warehouse
- Lot size
- Single part to series
- Materials
- SiC, elastomers (NBR, FKM, EPDM, FFKM etc.), graphite, PTFE
- Lapping and polishing of sliding surfaces
- Calibrating
- Assembly area
- Leak testing
- Coating
Seals & Components
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Supplying mechanical seals (new parts, spare parts, special versions, equivalents of all commonSealing technology / engineering | – | – | – | Single part – Series | SiC (sliding pair SiC/SiC), FKM, EPDM, NBR, FFKM |
| Repair / overhaul of mechanical seals (condition assessment free of charge, repair after approval)Assembly | – | – | – | – | – |
| Lapping and polishing of sliding surfacesSurface | – | – | – | – | SiC, Ceramics, Metal (seal faces) |
| Repair of rubber bellows seals (elastomer bellows replacement)Assembly | – | – | – | – | Elastomer (rubber), FKM, EPDM, NBR |
| Repair of single-spring seals (corrosion/breakage testing, reworking of sliding surfaces)Assembly | – | – | – | – | – |
| Repair of multi-spring seals (also cartridge and API versions)Assembly | – | – | – | – | – |
| Repair of wave spring sealsAssembly | – | – | – | – | – |
| Repair of metal bellows seals (leak testing of the bellows)Assembly | – | – | – | – | Metal (bellows) |
| Repair of cartridge seals (disassembly, condition assessment per component, reassembly to size)Assembly | – | – | – | – | – |
| Repair of agitator seals (single/double, top-/bottom-entry, with barrier pressure or quench)Assembly | – | – | – | – | SiC, FFKM |
| Manufacture of special versions / remanufacturing of no longer procurable parts based on measurementManufacturing / engineering | – | – | – | – | – |
| Supplying O-rings, all dimensions per DIN ISO 3601, including seal kitsSealing technology | – | – | – | Single piece – Series | NBR, FKM/FPM, EPDM, HNBR, FFKM, AFLAS, Neoprene (CR), VMQ silicone, FEP-jacketed (silicone core), FEP-jacketed (FKM core) |
| Special-dimension O-rings endlessly vulcanised (also large diameters, cord by the metre)Plastics / joining | – | – | – | – | NBR, FKM, EPDM, VMQ silicone, HNBR, FEP, FFKM, AFLAS, Neoprene (CR) |
| Flat gaskets per DIN EN 1514-1, made to measure or to drawing (flange, ring, special shape)Sealing technology | – | – | – | – | Fibre material, Graphite, PTFE, Elastomer |
| Pressure gauges: replacement procurement, testing, calibration, repair (including inspection report)Testing / assembly | – | – | – | – | – |
| Aseptic valves: testing, overhaul and replacement (diaphragms, bellows, complete valves)Assembly | – | – | – | – | – |
| Compressor valves (plate, ring and disc valves): new supply and overhaulAssembly | – | – | – | – | – |
| Expansion joints (metal and rubber), designed according to medium, pressure, temperature, movementSealing technology / joining | – | – | – | – | Metal, Rubber |
| Assembling corrugated hoses & PTFE hoses (flexible metal and PTFE hoses, allJoining / assembly | – | – | – | – | Metal, PTFE |
| Coatings as wear and corrosion protection, including repair (e.g. shaft protection)Surface | – | – | – | – | – |
| Gland packings, moulded parts and custom fabrications (assignment via sample or drawing)Sealing technology | – | – | – | – | – |
| Leak testing of mechanical seals / componentsTesting | – | – | – | – | – |
| Sending in seal components: disassembly, measurement, condition assessmentTesting | – | – | – | – | – |
1 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Workshop / overhaul area (lapping, calibrating, assembling) | – | – | – | – | Munich |
Additional services
Reference customers
Quality
Components are inspected, documented and returned with inspection reports or certificates in the company's own QM system compliant with DIN EN ISO 9001:2015, from goods receipt to final inspection. Every overhauled seal leaves the workshop after a final inspection; this includes leak testing and material-related documentation (including FDA, Regulation (EC) 1935/2004).
| Evidence | Munich |
|---|---|
| DIN EN ISO 9001:2015 |
History
- 1980
Founded in Munich; owner-managed to this day
- 2018
Certificate no. GM2018 (DIN EN ISO 9001:2015, QAS International GmbH) issued
- 2026
Website states 46+ years of experience, 30.000+ spare parts in stock and 3.500+ customers served