Extrusion of silicone seals: over 5,490 standard profiles and custom solutions from in-house tool development

GfA-SiliTech GmbH

Marxen near Hamburg · Goor (NL)New on Amplifa

ca. 1978Founded (47 years of experience according to the website)

over 5,490Standard profiles in the program

2Locations (Marxen, Goor NL)

495–2,495 €Tooling costs for new profiles

Silicone specialist with in-house manufacturing depth

GfA-SiliTech GmbH, based in Marxen near Hamburg, is part of the GfA sealing group and specializes in silicone seals. The company extrudes silicone profiles and offers over 5,490 standard profiles as well as individually developed sealing solutions. Its value chain extends from in-house toolmaking through design and development to prototype and series production, including multi-component solutions. Silicone rubber is used because of its lasting elasticity and resistance to UV radiation, weathering, ozone and extreme temperatures. The company is certified to ISO 9001 and ISO 14001 and manufactures in Germany. Its customers are mainly found in window and door construction, in the building and sealants trade, in metal construction, container and vehicle manufacturing as well as in the food and medical technology sectors. In addition to its headquarters in Marxen, the group maintains a branch in Goor, the Netherlands, with GfA-SealSystems West B.V.

Site: Marxen bei Hamburg
Processes: Extrusion of silicone seals (standard profiles and custom profiles), Toolmaking (in-house tool development and production), Development of custom sealing solutions / multi-component solutions (prototype to series), In-house toolmaking, Extrusion of silicone profiles, Custom seal development (design/technology), Prototype and series production, Multi-component solutions
Materials: Silicone rubber, TPE, PVC
Certificates: ISO 9001, ISO 14001
Founded: ca. 1978

01
Consulting and seal development
02
Design and toolmaking
03
Extrusion of silicone profiles
04
Prototype production
05
Series production
06
Multi-component solutions

Materials and processes

VMQ

Silicone rubber

Permanently elastic material with high resistance to UV, ozone, weathering and temperature for long-lasting seals.

TPE

Thermoplastic elastomer as an alternative for economical sealing applications.

PVC

Flexible PVC for simple sealing applications in the building and elements sector.

Locations

Marxen near Hamburg

Headquarters, production and toolmaking

Lot size: Prototype to series
Materials: Silicone rubber, TPE, PVC

Extrusion lines
In-house toolmaking

Goor

Branch office GfA-SealSystems West B.V.

Seals and profiles

**Silicone seal profiles**Extrusion · Window and door construction

**Temperature-resistant seals**Extrusion · Vehicle and equipment manufacturing

Inside the production

Processes & technical limits

Processes	Tolerance	Max. part	Weight	Lot size	Materials
Extrusion of silicone seals (standard profiles and custom profiles)Plastics	–	–	–	–	Silicone rubber
Toolmaking (in-house tool development and production)Engineering	–	–	–	–	Silicone rubber
Development of custom sealing solutions / multi-component solutions (prototype to series)Engineering	–	–	–	–	Silicone rubber

Additional services

In-house toolmakingExtrusion of silicone profilesCustom seal development (design/technology)Prototype and series productionMulti-component solutionsConsulting

Quality

The processes are certified to ISO 9001 and ISO 14001; documented standards ensure reproducible quality even in large series. The company grants a ten-year warranty on all silicone seals.

Evidence	Marxen near Hamburg
ISO 9001
ISO 14001

History

ca. 1978
According to its own statements, GfA has been a partner for seals for over 40 years; the website cites 47 years of experience.