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

  1. Small installation grooves.
  2. Minimal break-out and dynamic sliding friction. Therefore no stick-slip. Steady movement is guaranteed even at low velocities.
  3. Excellent sliding properties.
  4. High wear resistance, therefore long service life.
  5. High temperature resistance.
  6. Compatibility with nearly all media due to the high chemical resistance of the rod sealing ring, and a wide selection of O-ring compounds.
  7. 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.

NDS PTFE Compounds

Color Temperature Application Characteristics
NDS-100
PTFE virgin
White -190 to +230 °C Chemical Industry, Food Industry High chemical restistance
NDS-123
PTFE +15% glass, +5% molybdenum disulfide
Grey -190 to +290 °C Medium-duty High chemical restistance, High creep resistance, Electrical properties like virgin PTFE
NDS-150
PTFE modified
Blue -190 to +230 °C Low-duty hydraulic applications Improved wear resistance
NDS-225
PTFE +25% carbon
Black -190 to +315 °C Pneumatics Rotary sealing High wear and creep restistance
NDS-235
PTFE +10% carbon fibre
Black -260 to +310 °C Water hydraulics, Seawater, Short strokes with high frequency Very good wear properties
NDS-415
PTFE +15% graphite
Antrachite -190 to +230 °C Low mechanical stress, Soft sealing Surfaces Chemical resistance
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.

Back-up Rings ►

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.

Rotary seals ►

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.

Rod seals ►

 

Contact Us

We believe in the quality of our products and service. Fill out the form and one of our skilled engineers will contact you within the next business day.

Contact details

  •  +31 (0) 226 362 233
  •  info@newdealseals.com
  •  Energiestraat 2-5, 1749DN Warmenhuizen, Nederland

6 + 1 =