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.

NDS PTFE Compounds

Kleur Temperatuur Toepassing Kenmerken
NDS-100
PTFE virgin
Wit -190 tot +230 °C Chemische industrie, Voedingsmiddelenindustrie Hoge chemische weerstand
NDS-123
PTFE +15% glas, +5% molybdeenbisulfide
Grijs -190 tot +290 °C Gemiddelde belasting Hoge chemische weerstand, Hoge kruipweerstand, Elektrische eigenschappen zoals virgin PTFE
NDS-150
PTFE gemodificeerd
Blauw -190 tot +230 °C Hydraulische toepassingen met lage belasting Verbeterde slijtvastheid
NDS-225
PTFE +25% karbon
Zwart -190 tot +315 °C Pneumatiek Roterende afdichting Hoge slijtvastheid en kruipvastheid
NDS-235
PTFE +10% koolstofvezel
Zwart -260 tot +310 °C Waterhydraulica, Zeewater, Korte slagen met hoge frequentie Zeer goede slijtage-eigenschappen
NDS-415
PTFE +15% grafiet
Antraciet -190 tot +230 °C Lage mechanische belasting, zachte afdichtende oppervlakken Chemische weerstand
NDS-640
PTFE +40% brons
Brons -156 tot +260 °C Gemiddelde en zware mechanische belasting, hydraulische toepassingen Uitstekende slijtage en kruipweerstand
NDS-660
PTFE +60% brons
Brons -156 tot +260 °C Zware mechanische belasting, hydraulische toepassingen Uitstekende slijtage en kruipweerstand
NDS-750
PTFE + polyimide
Bruin -260 tot +310 °C Rotaties met hoge snelheid Gebruik tegen zachte metalen

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 Us

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Contact details

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

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