Dynamic seals

Dynamic seals are sealing elements that move relative to each other. These seals are distinguished by their applica-tion in translational (back and forth) motion, in rotational (turning) motion or in a combination of both motion types.

They are used to prevent mass transfers between two components moving relative to each other (from one space to another) or to reduce this to a minimum. Typical examples for the application of dynamic seals are in hydraulic cylinders or the sealing of rotating shafts.

Application limits

Limits to the application of dynamic seals depend on many different parameters and can therefore vary quite strongly.

Major roles, for instance, are attributed to:

  • Speed of movement (stroke speed or rotational speed)
  • Media to be sealed off (water, air, oil, etc.)
  • Sealing performance level
  • GLevel of pressure difference between two spaces to be sealed from each other
  • Temperature difference
  • Degree of pollution to be excluded
  • Expenditures and assembly efforts
  • Practical relationship:
    – Quality of the contacting surface
    – Suitable match between contacting surface and seal material
    – Stability of the sealing material against the medium to be sealed off

Dynamic seals overview

We manufacture slide ring seals for applications in hydraulics and pneumatics in several designs

  • Rod seals: single-acting or double-acting
  • Piston seals: single-acting or double-acting
  • Rotary seals: internal or external sealing
  • with and without O-ring in a slide ring set

We manufacture and deliver tapes, including guiding belts made of non-metallic materials for applications in hy-draulics and pneumatics. Different designs are possible:

  • Straight joint
  • Diagonal joint
  • Overlapping joint

The lengths are cut off the roll.

We manufacture cuffs mostly as V-ring sets in several designs:

  • Least pressure V-ring set
  • Low pressure V-ring set
  • High pressure V-ring set
  • Extreme pressure V-ring set

Different combinations of materials and packing heights are possible.

We manufacture diverse seals and cuffs made from a large variety of high-performance plastics in several designs. These include for example:

  • Collar seals
  • Radial shaft seals
  • Shaft seals with PTFE lip
  • Lip seals
  • Clamp seals
  • Quad-rings
  • Hat-shaped cuffs
  • Cup-shaped cuffs
  • V-rings
  • Wipers

We will be happy to advise you in the manufacture of cuffs and seals made from PTFE.

Product pages – dynamic seals

We have put together a selection of dynamic seals for you on the following details page.

Wiper, Type AS 01

The wiper type AS 01 consists of an PTFE profile ring and an O-ring as a preload element.

Wiper, Type AS 02

The wiper type AS 02 equipped with two seal edges is a double-acting seal. It consists of an PTFE profile ring and an O-ring as a preload element.

V-rings

PTFE V-rings are used mainly for sealing on plunger and piston rods of hydraulic cylinders, presses, valve spindles and controls.

Piston seals, double-acting Type KD 02 + KD 03

Double-acting type KD 02 (without notches) and KD 03 (with notches) piston seals are ideally suited for use in hy-draulic systems and promise stick-slip-free running as well as good dry-running properties.

Piston seal, double-acting Type KD 04

The double-acting piston seal type KD 04 is a two-piece seal, consisting of a profile ring and an O-ring as a preload element.

Piston seal, single-acting Type KD 01

The single-acting piston seal type KD 01 is primarily used in cylinders with one-sided pressurization.

Piston guide ring Type KF

The piston guide ring type KF prevents metal parts from contacting each other and additionally absorbs occurring shear forces.

Rotary seal, external sealing, Type RA

The external sealing rotary seal type RA is used as a double-acting seal for rotary unions, axes, actuators and shafts.

Rotary seal, internal sealing, Type RI

The internal sealing rotary seal type RI is used as a double-acting seal for rotary unions, axes, actuators and shafts.

Rod seals, double-acting Type SD 02 + SD 03

Double-acting type SD 02 (without notches) and SD 03 (with notches) rod seals are ideally suited for use in hydraulic systems and promise stick-slip-free running as well as good dry-running properties.

Rod seal, single-acting Type SD 01

The single-acting rod seal type SD 01 is primarily used in cylinders with one-sided pressurization.

Rod seal, single-acting Type SD 04

This single-acting rod seal type SD 04 is a two-piece seal.

Rod guide ring, Type SF

The rod guide ring type SF prevents metal parts from contacting each other and additionally absorbs occurring shear forces.

We look forward to your request!

Do you have a specific question regarding dynamic seals from different high-performance plastics?
Please use our request form or get in contact with us directly.

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Direct contact

We look forward to hearing from you.
Phone: +49 35 22 35 23 0 – 0
E-mail: info@ptfe-cc.de

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