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.
Type of movement
≤ 4,0 m/s
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
Profiles Wiper Seals
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 consists of a single-acting PTFE wiper ring and an O-ring as pretensioning element.
Economic price level.
NDS PTFE Compounds
|White||-190 to +230 °C||Chemical Industry, Food Industry||High chemical restistance|
PTFE +15% glass, +5% molybdenum disulfide
|Grey||-190 to +290 °C||Medium-duty||High chemical restistance, High creep resistance, Electrical properties like virgin PTFE|
|Blue||-190 to +230 °C||Low-duty hydraulic applications||Improved wear resistance|
PTFE +25% carbon
|Black||-190 to +315 °C||Pneumatics Rotary sealing||High wear and creep restistance|
PTFE +10% carbon fibre
|Black||-260 to +310 °C||Water hydraulics, Seawater, Short strokes with high frequency||Very good wear properties|
PTFE +15% graphite
|Antrachite||-190 to +230 °C||Low mechanical stress, Soft sealing Surfaces||Chemical resistance|
PTFE +40% bronze
|Bronze||-156 to +260 °C||Medium and heavy mechanical stress, Hydraulic applications||Outstanding wear and creep resistance|
PTFE +60% bronze
|Bronze||-156 to +260 °C||Heavy mechanical stress, Hydraulic applications||Outstanding wear and creep resistance|
PTFE + polyimide
|Tan||-260 to +310 °C||High speed rotating applications||Use against soft metals|
Related PTFE 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.
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+31 (0) 226 362 233
Energiestraat 2-5, 1749 DN Warmenhuizen, The Netherlands