Technical industrial seals, custom seals and seal kits for hydraulics, pneumatics and mechanical engineering
HP-Dichtungen GmbH & Co. KG
Am Kirchenhölzl 14, 82166 Gräfelfing (DE)New on Amplifa
About HP-Dichtungen
HP-Dichtungen is a technical industrial wholesaler and specialist for hydraulic, pneumatic and industrial seals headquartered in Gräfelfing near Munich. Founded in 1982, the company supplies over 3 million seals per year from a range of more than 35,000 articles and is a Premium Distributor of Parker Prädifa with access to over 50 manufacturer and production sites worldwide. The service portfolio includes piston and rod seals, wipers, guide rings and guide tapes, O-rings, backup rings, flat gaskets, rotary and shaft seals as well as custom seals and remanufactured parts based on samples, drawings or specifications. In addition, the company offers technical consulting and CAD-based design, kitting of cut guide tape sections, ready-to-install repair sets and seal kits, and supply concepts such as volume contracts and warehouse outsourcing. Materials include elastomers such as NBR, HNBR, EPDM, FKM and FFKM, PTFE and PTFE compounds, PU/TPU, silicones, thermoplastics such as PEEK, PA and POM, as well as graphite and fiber materials. Customers come from 14 industries, including mechanical engineering, agricultural machinery, construction machinery, chemicals, pharmaceuticals, energy technology, automotive and defense technology.
- Site
- Gräfelfing
- Processes
- Custom seals & remanufactured parts based on samples, drawings or specifications, Technical consulting & design (material, geometry, tolerance; CAD-based design), Guide tape cut sections (kitting of bulk material to desired length), Parker guide rings & guide tapes (distribution; profiles FR, F1, FK, F2 Polon, F3, FC, FP, FU, FV), Seal supply for hydraulic presses (pneumohydraulic high-precision presses), Technical consulting and design (material, geometry, medium), CAD-based design of drawing parts, samples and special versions, Custom seals and remanufactured parts based on samples, drawings or specifications
- Materials
- NBR (acrylonitrile-butadiene rubber), HNBR, EPDM, FKM / Viton™, FFKM, PTFE (pure), PTFE compounds (filled, e.g. PTFE-glass), Polyurethane (PU)
- Certificates
- ISO 9001
- Founded
- 1982
- Industries
- Mechanical engineering, Hydraulic presses & tools, Construction machinery, Agricultural machinery & agricultural technology, Food industry, Medical technology
- 01
- 02
Engineering & CAD-based design
- 03
Material and source selection (50+ manufacturers worldwide)
- 04
Procurement or custom manufacture / remanufacture
- 05
Kitting (cut sections, seal kits, small load carriers)
- 06
Delivery, series & spare parts supply
Materials & Processes
NBR (acrylonitrile-butadiene rubber)
Oil- and fuel-resistant standard material for hydraulics, pneumatics and mechanical engineering.
HNBR
Higher temperature, ozone and aging resistance than NBR, including continuous operation.
EPDM
For water, hot water, steam, glycol mixtures and weather-exposed outdoor applications.
FKM / Viton™
High-temperature and media-resistant material for oils, fuels and many chemicals.
FFKM
For extreme chemical and temperature requirements with high failure costs.
PTFE (pure) and PTFE compounds
Chemically inert, temperature-resistant and low friction for aggressive media and sliding applications.
Polyurethane (PU/TPU)
Abrasion-resistant and pressure-resistant, the standard for dynamic hydraulic seals and wipers.
VMQ / silicone and FVMQ / fluorosilicone
Flexible at low and high temperatures, including food, medical and laboratory applications.
PEEK
High-strength thermoplastic for precision special components, backup and guiding elements.
Thermoplastics (PA, POM, TPE-E)
For guide rings, plain bearings, backup rings and technical precision parts.
Thermosets (epoxy and phenolic resin fabric)
Dimensionally stable, chemical- and temperature-resistant materials for guiding and insulating components.
Graphite, aramid and fiber materials
For flange gaskets, packing and static high-pressure applications.
Locations
Gräfelfing
DEHeadquarters, sales, engineering & dispatch
- Lot size
- Single part to series
- Materials
- NBR, HNBR, EPDM, FKM, FFKM, PTFE, PU/TPU, VMQ, PEEK and more
Components & Products
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Assembly | – | – | up to 400 bar (pressure); −60 … +250 °C | Single part to series | NBR, FKM, PTFE |
| Custom seals & remanufactured parts based on samples, drawings or specificationsEngineering | – | – | – | – | NBR, HNBR, EPDM, PTFE, FKM, FFKM, PU/TPU, VMQ, FVMQ, PEEK |
| Technical consulting & design (material, geometry, tolerance; CAD-based design)Engineering | – | – | – | – | – |
| Guide tape cut sections (kitting of bulk material to desired length)Assembly | – | – | – | Small quantities – Series | Guide tapes (plastic/composite) |
| Assembly | – | – | – | up to 25 individual parts per seal kit | PU, NBR, PTFE |
| Parker guide rings & guide tapes (distribution; profiles FR, F1, FK, F2 Polon, F3, FC, FP, FU, FV)Assembly | – | – | specific load up to 30 N/mm² | – | wear-resistant plastics, composite materials |
| Seal supply for hydraulic presses (pneumohydraulic high-precision presses)Assembly | – | – | – | – | – |
Additional services
Reference customers
Quality
HP-Dichtungen operates a certified quality management system in accordance with ISO 9001 with defined, documented processes from consulting through design to delivery. In addition to annual audits and re-certification, material certificates, traceability, declarations of conformity (including REACH, RoHS, FDA, USP, GMP) and a defined complaint management process are offered.
| Evidence | Gräfelfing |
|---|---|
| ISO 9001 |
History
- 1982
Foundation of HP-Dichtungen in Gräfelfing near Munich