
Manufacturing of standard and custom seals based on sample, drawing or installation dimensions on CNC machines up to 1500 mm diameter

DDT Dichtungstechnik GmbH
Senden (Ottmarsbocholt)New on Amplifa
About DDT Dichtungstechnik
DDT Dichtungstechnik GmbH, based in Senden (Ottmarsbocholt) in the Münsterland region, is a specialist in standard seals and custom seals. Production takes place in its own plant on CNC machines based on samples, drawings or exact installation dimensions – as individual items or in series – up to a diameter of 1500 mm. The product range includes wipers, piston seals, rod seals, guide rings, rotary seals, backup rings and flat seals. Common sealing materials such as polyurethane (HPU/PU), NBR, FPM/FKM, EPDM, silicone, PTFE, POM and PA (PA 6 G) are used; a material consultation with data sheets is available. DDT seals are used particularly in fluid systems, such as hydraulics. The company complements its offering with consultation and application concepts for suitable sealing solutions.
- Site
- Senden
- Processes
- Manufacturing of standard seals and custom seals (special profiles) based on sample, drawing or, Manufacturing of wipers, Manufacturing of piston seals, Manufacturing of rod seals, Manufacturing of guide rings, Manufacturing of rotary seals, Manufacturing of backup rings, Manufacturing of flat seals
- Materials
- HPU/PU (Polyurethane), NBR (Acrylonitrile-Butadiene Rubber), FPM/FKM (Fluoro Rubber), EPDM (Ethylene-Propylene-Diene Rubber), Silicone, PTFE (Polytetrafluoroethylene), POM (Polyoxymethylene), PA (Polyamide)
- Industries
- Fluid systems, Hydraulics
- 01
Material consultation and data sheets
- 02
Application concept for sealing solution
- 03
CNC manufacturing based on sample, drawing or installation dimension
- 04
Delivery from stock
Materials and Processes
Polyurethane
Particularly high performance in terms of mechanical load capacity, elasticity and gas tightness.
Acrylonitrile-Butadiene Rubber
Resistant to hydraulic oil and acids, and insensitive to lubricating greases and gasoline.
Fluoro Rubber
Highly resistant to mineral oils, aromatic hydrocarbons and acids.
Ethylene-Propylene-Diene Rubber
Used for seals that must be resistant to hot water and steam; also available as EPDM KTW-FDA.
Silicone
Temperature-resistant and resistant to alcohols and ketones.
Polytetrafluoroethylene
Universally resistant, low-wear and exceptionally temperature-resistant, but with lower elasticity.
Polyoxymethylene
Thermoplastic with high stiffness, low friction values and very good dimensional stability.
Polyamide
Resistant to mineral oils, acids and diluted alkalis, used for backup and guide rings.
CNC Manufacturing
Custom seals as individual items or in series based on sample, drawing or installation dimension, up to 1500 mm diameter.
Location
Senden (Ottmarsbocholt)
DEManufacturing and Sales
- Lot size
- Single-item production to series
- Materials
- HPU/PU, NBR, FPM/FKM, EPDM, silicone, PTFE, POM, PA
- CNC machines (machining up to diameter 1500 mm)
Inside the production


Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Manufacturing of standard seals and custom seals (special profiles) based on sample, drawing orPlastics | – | up to 1500 mm diameter | – | Single-item production – Series | HPU/polyurethane, NBR, FPM/FKM, EPDM, Silicone, PTFE, POM, PA (PA 6 G) |
| Manufacturing of wipersPlastics | – | – | – | – | HPU/polyurethane, NBR, FPM/FKM, EPDM, Silicone, PTFE, POM, PA (PA 6 G) |
| Manufacturing of piston sealsPlastics | – | – | – | – | HPU/polyurethane, NBR, FPM/FKM, EPDM, Silicone, PTFE, POM, PA (PA 6 G) |
| Manufacturing of rod sealsPlastics | – | – | – | – | HPU/polyurethane, NBR, FPM/FKM, EPDM, Silicone, PTFE, POM, PA (PA 6 G) |
| Manufacturing of guide ringsPlastics | – | – | – | – | PA (PA 6 G), Polyurethane, PTFE, POM |
| Manufacturing of rotary sealsPlastics | – | – | – | – | HPU/polyurethane, NBR, FPM/FKM, EPDM, Silicone, PTFE, POM, PA (PA 6 G) |
| Manufacturing of backup ringsPlastics | – | – | – | – | PA (PA 6 G), Polyurethane, PTFE, POM |
| Manufacturing of flat sealsPlastics | – | – | – | – | HPU/polyurethane, NBR, FPM/FKM, EPDM, Silicone, PTFE, POM, PA (PA 6 G) |
1 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| CNC machines (for seal manufacturing) | – | – | Machining up to diameter 1500 mm | – | Senden, An der Windmühle 17 |
Additional services