Rotary seals

In addition to the complete range of shapes and dimensions of radial shaft seals according to DIN 3760/3761, we also supply all designs of axial shaft seals (V-rings) as well as shaft sleeves. Seals for rotary distributors, rotary actuators, hydraulic motors and tool spindles of all types are manufactured for rotary / swivel movements.

Standard profiles

The standard profiles shown below are seals that represent the state of the art. We manufacture these standard seals in-house or supply them as moulded parts from approved partners for all required groove dimensions in a variety of materials.

Depending on the quantity, the material and your requirements, we will offer you seals in the appropriate manufacturing process.

A general overview and further information are listed in the following categories:

Rotary seals (compact, axial and grooved ring profiles)
Rotary seals with leader elements made of elastomer

Choosing the correct profile

The more information is known, the better a sealing system can be adapted to a specific application.

To choose the right profile and the ideal material, the following criteria are important:

installation space
double-acting or single-acting
pressure range
temperature range
medium
rotation / swivel speed
counterface
mounting possibility
friction behavior
tightness
service life expectancy
price
availability

Rotary seals (compact, axial and grooved ring profiles)

Numerous applications can not be sealed with rotary shaft seals. The applications listed below require special rotary seals.

Application

rotary joints
rotary indexing tables
swivel devices
mounting in closed grooves
many dimensions available as molded parts
small installation space
low friction
single-acting and double-acting use

Pressure range:	up to 200 bar
Sliding speeds:	up to 30 m/s
Temperature range:	-55 to +220 °C (depending on material)

rotary seal
DR 103

Sealing profile for hydraulic applications, very robust but not low-friction, center part usually made of PU.

rotary seal
DR 104

Rod or piston labyrinth or comb seal made of NBR, FPM or PU, small overall height possible.

rotary seal
DR 105

Rod or piston labyrinth or comb seal made of NBR, FPM or PU, small overall height possible.

rotary seal
DR 106

V-rings (axial seal) made of NBR or FPM available in all designs (A, S, L, E). Wide range of dimensions available at short notice. Special dimensions, materials and designs are produced by machining. Designs made of PTFE and PTFE compounds, e.g. with spring preload, are also possible.

rotary seal
DR 107

rotary seal
DR 108

Proven many times over, very small, single-acting sealing profile for low pressures made of NBR, PU, FPM etc.

rotary seal
DR 112

Double-acting, solid, robust sealing profile, not low-friction, but tight.

rotary seal
DR 113

as DR103 but with active back-up rings for higher pressures and/or larger sealing gaps when friction is not of primary importance.

Rotary seals with leader elements made of elastomer

Rotationsdichtungen mit Vorspannelementen aus Elastomer

Rotary seals with a preload element consist of an outer ring made, for example, of PTFE, PTFE compound, PE, PU, PA and an O-ring or rectangular ring. The outer rings are usually turned parts and can therefore be manufactured in a very wide range of dimensions.

Application

rotary joints
rotary indexing tables
swivel devices
special machine construction
assembly in closed grooves from diameter 20 mm
high pressures
low sliding speeds
single-acting and double-acting use

Pressure range:	up to 300 bar
Sliding speeds:	up to 2 m/s
Temperature range:	-55 to +200 °C (depending on material)

rotary seal
DR 110

Sliding ring for O-ring. If the friction of a pure O-ring seal is too high or the O-ring tends to rotate, this PTFE and PTFE compound seal ring can help. The DR115 and DR116 profiles represent the improved version.

rotary seal
DR 111

rotary seal
DR 115

Double-acting rotary seal (rods or pistons) consisting of a PTFE compound base ring and an O-ring as preload element. E.g. for high pressures at low circumferential speed. Simple groove design and small axial installation space. Wide temperature application range depending on O-ring material. Small coefficient of friction. Up to 300 bar, up to 5 m/s. It is essential to observe the sealing gap. Special designs are possible, e.g. with support ring made of PEEK for higher pressures/larger gaps or with reduced preload, particularly narrow design, etc.