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. These seals help to extend the service life of parts and to enhance the long-term performance.

Producers of rotary transmissions prefer simplified seal designs. This can be achieved by means of internally sealing rotary sealing set profile Y1. They consist of wear resistant glide rings of low friction and of NBR or FKM O-rings as energizer. The rotary sealing set profile Y1 is suitable mainly for applications where the pressure alternates from one side of the seal to the other, such as pivots for rotating track rings, swivel joints, hose reels, and in machine tool hydraulics. If the sealing set is used as an end seal, it is recommended to install a wiper ring at the end of the components.

NewDealSeals supplies a wide range of rotary seals as an economic alternative to for instance Roto Glyd Ring® and Rotomatic®.

Advantages Rotary Seal

  1. Minimal break-out and dynamic slide friction. Therefore no stick-slip. Steady movement is guaranteed even at low velocities
  2. Low wear
  3. High extrusion resistance
  4. High temperature resistance
  5. Compatibility with nearly all media due to the high chemical resistance of the rod sealing ring, and a wide selection of O-ring compounds
  6. Available in diameters up to 1500 mm

Extra info

Please apply this seal only in combination with closed guiding elements.
Standard compounds and range

Technical Specifications

Movement type

Rotary

Working pressure

≤ 300 bar

Working temperature

standard:-30 to +108°C

with FKM O-ring:-25 to +204°C

Surface speed:

≤ 1,0 m/s

Standard sealing ring compounds

NDS-225, PTFE + 25% carbon

Standard materials O-ring

NBR, FKM, FFKM

Profiles Rotary Seals

PROFILE Y1

Considering the special working conditions, the rotary sealing set profile Y1 is equipped with one or two circumferential lubricating grooves.

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
Datasheet

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 ►

Spring Energized Seals

The Synering® system is an advanced sealing concept designed to meet extreme demands regarding temperature, medium, etc. which cannot be covered by conventional sealing compounds.

Spring Energized Seals ► 

 

CONTACT  FORM

    

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NewDealSeals B.V.

+31 (0) 226 362 233

info@newdealseals.com

Energiestraat 2-5, 1749 DN Warmenhuizen, The Netherlands