Reliable. Since 1980.
Sealing technology maintenance teams rely on.
We identify, repair and supply mechanical seals. Brand-independent, tested in our workshop in Munich, Germany. Shipping worldwide.
Mechanical seals, seal kits and technical components.
We assess sealing problems on the component and in the installation, not in the catalogue. That is why we check first and then recommend what makes economic sense: repair, new part or custom solution. Brand-independent, since 1980, from Munich, Germany.
More services around the sealing point.
Everything with one contact, properly documented.
O-rings & O-ring kits
Suitable materials and dimensions: EPDM, FKM, NBR, FDA-compliant possible.
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Flat gaskets
To DIN EN 1514-1 or drawing: flange, ring and custom shape.
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Corrugated hoses & PTFE
Flexible hose solutions for medium, temperature and pressure.
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Pressure gauges & Components
Replacement sourcing, repair and technical assessment.
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Aseptic valves
Testing, repair and replacement of aseptic valves for food and pharma.
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Compressor valves
Suction & discharge valves for refrigeration and air-conditioning compressors. Supply and repair.
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Expansion joints
Metal and rubber expansion joints for pipelines, all nominal sizes and connection types.
Learn more› §Leak testing & Certificates
Declarations of conformity, material certificates and test reports.
Request certificates›Repair when it makes economic sense.
We analyse condition, repairability and effort. You get a clear decision between repair and replacement, technically sound and economically transparent.
Mechanical seals · Pressure gauges · Aseptic & compressor valves · Coatings
Check if repairableSend the part in directly: LuWo-Seal Dichtungstechnik GmbH · Langwieder Hauptstraße 2–4 · 81249 Munich, Germany. Informally, with a contact person and call-back number. The first check is free of charge.
of the new-part price is what a repair costs, depending on design and condition. For small standard parts the share is higher, then a new part is often the better choice. We tell you that too before you decide.
Rough estimate based on a standard design, common material combination and average values.
- Goods receipt
Analyse
Check condition and repairability.
- Finding
Assess
Compare effort and alternative.
- Workshop
Repair
Machine, replace, assemble.
- Check
Securing quality
Final inspection in our documented QM process.
- Return shipment
Trace back
Returned labelled and documented.
What you gain.
through fast technical assessment before anything is ordered or removed.
through a clean item structure with LuWo and customer numbers.
through labels and a documented history of recurring items.
between repair, new part and custom solution.
matched to medium, temperature and process. FDA-compliant possible.
From unknown sample to ready-to-use solution.
Four steps from photo to documented delivery.
Inquiry or sample
You send photos, dimensions, item numbers or the failed part. Informally, however the information is available.
A photo is enoughTechnical check
We check design, dimensions, sealing faces, elastomers, materials, installation and repairability.
In the Munich workshopProposed solution
Depending on condition and application: repair, new part, seal kit, hose solution, pressure gauge or custom solution.
Economically justifiedDocumented delivery
With clear item references, label, optional seal kit and traceable technical communication.
Traceably documentedIn case of downtime
On working days a direct line to a technician. No hotline, no queue.
+49 89 45 20 940‑0 Mon–Thu 7:30–16:30 · Fri 7:30–14:00 CETMore than mechanical seals.
Pressure gauges, aseptic valves, corrugated hoses, coatings: tested and repaired in Munich.
At home in sealing technology.
Solving sealing tasks for industry and maintenance since 1980.
Range available immediately for fast replacement.
From dairy to power plant, served brand-independently.
Tested and documented quality. Scope of certification: mechanical seals.
Partnerships that outlast generations of plants.
Many of our customer relationships have lasted for decades, because promises are kept. Most of our orders come from existing customers in food, pharma, chemicals, energy and municipal water management.
- One contact for years.No ticket system, no changing responsibilities. You talk to technicians who know your plant.
- Documentation that stands up to audits.Documented processes to DIN EN ISO 9001, labels, item references and material data, filed properly for QA and purchasing.
- Honest recommendations.If repair is more economical than a new part, we say so. Even if it is the smaller job for us.
LuWo Maintenance: one login, everything in one place.
- Your item and customer numbers at a glance
- Reorder recurring seals and seal kits
- Order history and job status
- Retrieve documentation and labels
Everyday products are made because seals last.
Quality management certified to DIN EN ISO 9001, scope mechanical seals · View certificate.
Quality with proof
Consistent quality you can prove: tested materials, clear item references and documentation you can find again later. From the first check to the finished solution, the same contact stays with you.
Experience & expertise
Solving sealing tasks for industry and maintenance since 1980. That experience means: we recognise what is installed, what has failed and what the economically right answer is.
Short routes, straight to a technician
You do not end up in a queue or at a call centre. On working days a technician is on the phone, Mon to Thu from 7:30 to 16:30, Fridays until 14:00 CET. And that is where your part is tested and repaired: in our workshop in Munich.
Answers for purchasing and maintenance.
We do not know the manufacturer or type of the seal. Is that still enough?
Yes. A photo of the seal, a photo of the pump nameplate and, if available, the shaft diameter are enough. Identifying unknown seals is everyday business for us: we match the part and supply the right replacement, brand-independently.
How quickly do we get a response?
On working days usually within 24 hours, with a technical assessment, not an acknowledgement of receipt. If your plant is down, call us directly on working days: +49 89 45 20 940‑0. You talk directly to a technician, not a hotline.
When is repair worth it compared with a new part?
We check that before you decide. Depending on design and condition, repair typically costs 40–60 % of the new-part price, in suitable cases you save up to 70 %. Sometimes a new part is the more economical choice. Either way you get a clear, transparent recommendation. The first check is free of charge.
We have EagleBurgmann, John Crane & Co. installed. Can you supply?
Yes, that is exactly what we are here for. We are not an authorised dealer for any single manufacturer but work brand-independently: whether an EagleBurgmann, John Crane, Flowserve, AESSEAL or OEM part is installed, we supply the equivalent or an alternative better suited to your operating point, matching dimensions, medium and installation.
How do we send in a failed part for inspection?
Informally by parcel to: LuWo-Seal Dichtungstechnik GmbH, Langwieder Hauptstraße 2–4, 81249 Munich, Germany. Enclose the shipping note from our confirmation email or announce the shipment briefly by email. We get back to you with the inspection result.
Do we get documentation for QA and purchasing?
Yes. Every delivery has a unique item reference with the LuWo number and, on request, your customer number, labels for your stores and material data. FDA-compliant materials and extended documentation are possible per project; our QM is certified to DIN EN ISO 9001.
Contact
Let's talk about your seal.
Send a photo, dimensions or item number. On working days you usually receive a technical assessment within 24 hours.