
Development and production of technical rubber products such as rubber moulded parts, seals and rubber-metal composites in our own manufacturing facilities.

DI Kubai GmbH
Wernstein am Inn, AustriaNew on Amplifa
About Kubai
DI Kubai GmbH, based in Wernstein am Inn (Austria), specialises in the development and production of technical rubber products. The product portfolio includes solid rubber articles, precision seals, rubber-metal composites, rubber coatings, rubber moulded parts, hoses, wear-resistant rubber and rubber liners. The company supports customers throughout the entire process: from joint product development and design consulting and the selection of suitable rubber compounds to manufacturing in its own production facilities — complemented by in-house mould and tool making as well as repair services. In addition to standard products, Kubai offers custom manufacturing and tailor-made solutions. Effective 01.06.2026, W. Sturm GmbH became part of DI Kubai GmbH; going forward, both operate under the name DI Kubai GmbH, expanding the portfolio to include moulded parts, profiles, sealing technology and compensators. The company is part of the CAB Group. The production site is Wernstein; an international customer base is served in German and English.
- Site
- Wernstein am Inn, Austria
- Processes
- Production of technical rubber products (rubber moulded parts, custom manufacturing), Mould making / Tool making, Material consulting & engineering, Repair, Development, Consulting/Material consulting & engineering, In-house manufacturing, Mould making/Tool making
- Materials
- Rubber / Elastomers (rubber compounds), Rubber compounds / Elastomers, Rubber-metal composite, Mould making / Tool making
- Certificates
- ISO 9001
- 01
Development and design consulting
- 02
Material consulting & engineering (rubber compounds)
- 03
Mould making / tool making
- 04
In-house manufacturing
- 05
Repair and customer service
Materials & Services
Rubber compounds / Elastomers
Various rubber compounds are used for rubber moulded parts, seals and solid rubber articles; the suitable quality is selected jointly with the customer.
Rubber-metal composite
Production of rubber-metal composites and rubber-coated components in our own production facilities.
Mould making / Tool making
In-house mould and tool making for the custom manufacture of rubber products.
Site

Wernstein
ATProduction and Administration
- Materials
- Rubber compounds / Elastomers
Products & Components






Inside the production


Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Production of technical rubber products (rubber moulded parts, custom manufacturing)Plastics | – | – | – | – | – |
| Mould making / Tool makingEngineering | – | – | – | – | – |
| Material consulting & engineeringEngineering | – | – | – | – | – |
| RepairAssembly | – | – | – | – | – |
Additional services
Quality
No certification information is available; quality is ensured through in-house development, materials consulting and manufacturing under one roof.
| Evidence | Wernstein |
|---|---|
| ISO 9001 |
Company History
- 2026
Effective 01.06.2026, W. Sturm GmbH becomes part of DI Kubai GmbH; going forward, both companies operate under the name DI Kubai GmbH.