Guide Rings | Wear Rings

The guide ring or wear ring guides a hydraulic cylinder piston and rod and absorbs lateral forces. Metal to metal contact between the moving parts of the cylinder, for instance between the piston and the cylinder or the rod and the cylinder head. The advantages of these non-metallic guide rings (compared with traditional metal guide rings) are, among others, a high bearing load capacity, the elimination of local stress concentrations, wear resistance, a low coefficient of friction and low maintenance costs.

NewDealSeals supplies a wide range of guide rings as an economic alternative for e.g. Slydring® in HiMod®, Orkot® and Turcon® compounds.

Advantages Guide Ring

  1. The tapes can be supplied either cut to length or by the meter, to be cut according to requirement.
  2. High load capacity (compressive strength), low wear and reduced friction due to an additive of carbon to the PTFE material.
  3. No tendency to stick-slip in the case of low sliding speed.
  4. Available in practical dimensions.
  5. Simple groove designs.
  6. Simple piston designs without metallic contact of the sliding surfaces.
  7. Profile geometry which is exactly suited to work in lubricated air as well as dry and oil-free air.

Technical Specifications

Working Temperature

-100 to +200°C

Surface speed

≤ 10,0 m/s

Permissible specific load

At working temperature < 100°C: 2,5 N/mm2

Compounds Guide Ring

NDS-225, PTFE + 25% carbon

NDS-150, PTFE modified

Profiles Guide Rings

PROFILE G1

For pneumatic applications

G1 and G2 are used for bearings where it is imperative that the system pressure is carried on the seals. They are designed as open bearings with a well defined gap.

PROFILE G2

For hydraulic applications

G1 and G2 are used for bearings where it is imperative that the system pressure is carried on the seals. They are designed as open bearings with a well defined gap.

PROFILE G3

For hydraulic applications

G3 is a closed bearing, which in certain applications is used as a combined seal and bearing.

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 ►

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  FORM

    

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NewDealSeals B.V.

+31 (0) 226 362 233

info@newdealseals.com

Energiestraat 2-5, 1749 DN Warmenhuizen, The Netherlands