GFD radial lip seals type MD with PTFE sealing lipRadial Lip Seals with PTFE Sealing Lip MH type.- same design as type M (but with 2 lips)
- high tightness, recommended for pumps and hydraulic motors
- for pressurized service (MDP)
- reccommended if sealing plate is under a medium
Shaft lip seals were especially developed for use under difficult and
extreme conditions.
The superior properties of PTFE as lip material combined with a corrosion resistant stainless steel housing provide the particular advantages of these rotary shaft lip seals.
Advantages and applications of MD type:• Temperature range from -70° C to +260°C
• Lowest friction and power draw
• Long seal life because of wear resistant lip materials
• Almost universal chemical resistance (depending on lip material)
• Suitable for dry running and poorly lubricated conditions
• High shaft speed up to 36 m/s
• Exchangeable with standard lip seals according to DIN 3760
• For food or pharmaceutical industry
Housing materials:Stainless steel (301,304)
Additional materials on request
| Lip materials: | | |
| Approximately 45 lip materials are available for special applications. Following please find a selection of materials: | | |
| Material Description | Relative Wear Resistance | Temperature Range |
| | 1 = low, 9 = high | |
| PTFE - virgin; for food and pharmaceutical applications | 3 | - 230 ... +190ºC |
| PTFE - with Carbon and Graphite; good general properties | 8 | - 100 ... +225ºC |
| PTFE - with Graphite; good general properties | 7 | - 130 ... +250ºC |
| PTFE - with Glass fiber and Graphite; good wear resistance | 9 | - 100 ... +260ºC |
| PTFE - with special filler; good wear resistance, for unhardened stainless steel shafts | 9 | - 100 ... +260ºC |
Chemical processing equipment
Hydraulic motors
Compressors
Shafts on gearboxes
Rotary
Blowers
Ventilators
Actuators
Rotary unions
Encoders
Mixers and Dryers
Robotics
Milling-machines
Pumps of all kinds
Pharmaceutical and food processing equipment
Centrifugal machines
Engines and Compressors crankshaft
For the sealing of different media, such as water, oils, greases, cooling fluids, food and pharmaceutical products, aggressive as well as corrosive media, chemicals, adhesives, resins, air and gases etc.
Technical Consultation and Service:
We will help you find the best solution for your seal problem.
Send us your drawing/sketch, working conditions (dimesions, shaft/housing material, operating speed, medium, pressure, life expectancy etc.).
All recommendations and data are based on the experience gained over decades of using those radial lip seals with PTFE sealing lip. Unknown factors and special conditions may restrict the generally valid promises. In critical cases we suggest tests with samples.
Contact information:
Dongguan Walle Sealing Technology Development Co., Ltd
Tel: 86-769-33291139 / 22762051
Mobile: 13620011767
Fax: 86-769-22762052
URL: walleseals.en.made-in-china.com