Manufacturer of O-rings and special seals made from elastomers and PTFE – in-house compound development, production and warehousing since 1963.
Alwin Höfert Fabrikation von Spezial-Dichtungen KG
Ammersbek (DE) · Northern Italy (IT, own plant) · Switzerland (CH, branch)New on Amplifa
About Höfert
Alwin Höfert Fabrikation von Spezial-Dichtungen KG is a manufacturer and supplier of O-rings and special seals based in Ammersbek near Hamburg. The family business, founded in 1963 by Alwin Höfert, is now run by the third generation and produces elastomer and PTFE products at its own sites in Germany and northern Italy as well as through a branch in Switzerland. The product portfolio includes O-rings made of FKM and FFKM (heat-resistant up to 320 °C), PTFE seals such as piston rings, shaft seals, flat gaskets and bellows, as well as FEP- and PFA-encased O-rings with cord thicknesses from 1.5 to 31.7 mm. In addition, cord rings, X-rings, rotary shaft seals, rubber molded parts, micro-precision O-rings and coated O-rings are manufactured. In-house compound development in the laboratory, precise toolmaking and 100 % inspection ensure product quality – even for the smallest quantities. On 12,000 m² of production and warehouse space in Ammersbek, more than 30,000 items are available from stock, which can be shipped the same day. Customers are found primarily in the chemical and pharmaceutical industries as well as food technology.
- Site
- Ammersbek
- Processes
- O-ring production (FKM, FFKM, further elastomers), PTFE seals (piston rings, shaft seals, flat gaskets, bellows), FEP-/PFA-encased O-rings (cord thicknesses 1.5–31.7 mm), Cord rings, Rotary shaft seals, Rubber molded parts / molded parts made of elastomer, Micro-precision O-rings, coated O-rings, X-rings, In-house compound development in the laboratory
- Materials
- FFKM, FKM, PTFE, PEEK, PFA, PVDF, FEP, VMQ
- Certificates
- DIN EN ISO 9001:2015, DIN EN ISO 14001:2015, ISO 9001, ISO 14001, BAM testing (PTFE compounds)
- Founded
- 1963
- Industries
- Chemical industry, Pharmaceuticals, Food technology, Industry and technology, Automotive
- 01
Compound development in the laboratory
- 02
Toolmaking
- 03
Production (vulcanization / PTFE processing)
- 04
100 % inspection
- 05
Warehousing & shipping
Sites
Ammersbek
DEProduction, warehousing and headquarters
- Lot size
- from the smallest quantities, more than 30,000 items available from stock
- Materials
- Elastomers (FKM, FFKM and others), PTFE
Northern Italy
ITOwn production plant
- Materials
- Elastomers
Switzerland
CHBranch
Components
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| O-ring production (FKM, FFKM, further elastomers)Plastics | – | – | – | smallest quantities | FFKM, FKM |
| PTFE seals (piston rings, shaft seals, flat gaskets, bellows)Plastics | – | – | – | – | PTFE, PEEK, PFA, PVDF |
| FEP-/PFA-encased O-rings (cord thicknesses 1.5–31.7 mm)Plastics | – | – | – | – | FEP, PFA, FKM, VMQ, EPDM |
| Cord ringsPlastics | – | – | – | – | Elastomers |
| Rotary shaft sealsPlastics | – | – | – | – | Elastomers |
| Rubber molded parts / molded parts made of elastomerPlastics | – | – | – | – | Elastomers |
| Micro-precision O-rings, coated O-rings, X-ringsPlastics | – | – | – | – | Elastomers |
| In-house compound development in the laboratoryEngineering | – | – | – | – | Elastomers, PTFE |
Additional services
Quality & Certification
Production is certified under a quality and environmental management system in accordance with DIN EN ISO 9001:2015 and DIN EN ISO 14001:2015 (TÜV SÜD). In the PTFE field, seven in-house compounds are BAM-tested; all products undergo 100 % inspection.
| Evidence | Ammersbek |
|---|---|
| ISO 9001 | |
| ISO 14001 | |
| BAM testing (PTFE compounds) |
History
- 1963
Alwin Höfert founds the company; living room as office, garage as warehouse.
- 1968
Klaus Höfert takes over management.
- 1995
Dirk Höfert joins the family business after studying mechanical engineering.
- 2022
Dirk Höfert becomes sole managing director (3rd generation).
- 2023
Death of Klaus Höfert.