Wiper Seals | Scraper Seals
The function of wiper seals is to prevent dust, dirt, grains of sand and metal dwarf from penetrating into axially moving rods and plungers. Thus the development of scratches is largely prevented, guiding elements are protected and the working life of seals is extended.
Advantages Wiper Seal
- Small installation grooves.
- Minimal break-out and dynamic sliding friction. Therefore no stick-slip. Steady movement is guaranteed even at low velocities.
- Excellent sliding properties.
- High wear resistance, therefore long service life.
- High temperature resistance.
- Compatibility with nearly all media due to the high chemical resistance of the rod sealing ring, and a wide selection of O-ring compounds.
- Available in diameters up to 1500 mm.
Technical Specifications
Type of movement
Rotary, reciprocating
Surface speed
≤ 4,0 m/s
Working temperature
Standard:-30 to +108°C
With FKM O-ring:-25 to +204°C
Standard materials Wiper
NDS-660, PTFE + 60% bronze
Standard materials O-Ring
NBR, FKM
Profiles Wiper Seals
PROFILE W1
For double-acting
Profile W1 consists of a double-acting PTFE wiper ring and an O-ring as pretensioning element.
Capable of sealing dynamic pressure from both sides (bidirectional) at high pressure.
PROFILE W2
For single-acting
Profile W2 consists of a single-acting PTFE wiper ring and an O-ring as pretensioning element.
Economic price level.
PTFE COMPOUNDS
| Color | Temperature | Application | Information | |
|---|---|---|---|---|
| NDS-100 PTFE-virgin |
White | -190 to +230 °C | Chemical Industry, Food Industry | High chemical resistance Datasheet |
| NDS-123 PTFE +15% glass, +5% molybdenum disulfide |
Grey | -190 to +290 °C | Medium-duty |
High chemical resistance, High creep resistance, Electrical properties like virgin PTFE
|
| NDS-225 PTFE +25% carbon |
Black | -190 to +315 °C | Pneumatics Rotary sealing | High wear and creep resistance Datasheet |
| NDS-235 PTFE +10% carbon fibre |
Black | -260 to +310 °C | Water hydraulics, Seawater, Short strokes with high frequency | Very good wear properties Datasheet |
| NDS-415 PTFE +15% graphite |
Antrachite | -190 to +230 °C | Low mechanical stress, Soft sealing Surfaces | Chemical resistance |
| NDS-555 PTFE + mineral fibers |
Antrachite | -200 to +260 °C | Medium and heavy mechanical stress, Hydraulic applications | Chemical, wear and creep resistance Datasheet |
| NDS-640 PTFE +40% bronze |
Bronze | -156 to +260 °C | Medium and heavy mechanical stress, Hydraulic applications |
Outstanding wear and creep resistance
|
| NDS-660 PTFE +60% bronze |
Bronze | -156 to +260 °C | Heavy mechanical stress, Hydraulic applications | Outstanding wear and creep resistance |
| NDS-750 PTFE + polyimide |
Tan | -260 to +310 °C | High speed rotating applications | Use against soft metals |
Related PTFE Seals
Back-up Rings
Back-up rings are used for static and dynamic applications in connection with O-rings, to prevent extrusion of the O-ring into the diametrical clearance.
Rotary Seals
Rotary seals are used in applications with oscillating or rotating movements in order to retain liquid lubricants and to prevent the penetration of dirt and water.
Rod Seals
The Rod Seal consists of a single-acting PTFE rod sealing ring and an O-ring. They are combined as a single unit and are appropriate for rods and plungers in hydraulic cylinders.
CONTACT FORM
We believe in the quality of our products and service. Fill out the form and we will contact you shortly.
NewDealSeals B.V.
+31 (0) 226 362 233
Boezemschop 8, 1724 BJ Oudkarspel, The Netherlands