Guide rings – Hydraulic seals
Piston and rod guide rings absorb transverse forces and avoid metallic contact between the sliding components. The additional element separates the “sealing” and “guiding” functions. In contrast to metallic guides, guide rings made of plastics are a cost-effective solution, reduce friction and wear, and in many cases do not require lubrication. Further information can also be found in the chapter “Guide elements” in the “Plastics Technology” brochure.
Standard profiles
By the standard profiles shown, we mean guide rings that represent the state of the art. We manufacture these guide rings ourselves for all required groove dimensions from a variety of materials. In addition to turned and injection-molded guide rings, we supply many dimensions as yard goods or ready-cut.
For a general overview and more information, see the following categories:
- Rectangular shaped guide rings
- L-shaped guide rings
- T-shaped guide rings
- U-shaped guide rings
The more information is known, the better a guide element can be adapted to a specific application.
To choose the right profile and the optimal material, the following criteria are important:
- installation space
- lateral forces
- temperature range
- medium
- rotary / swivel speed
- counter surface
- installation option
- friction behaviour
- service life expectancy
- price
- availability
Rectangular shaped guide rings
- standard
- cost-effective
- also available by the metre or pre-cut
- low friction
- easy assembly in closed grooves
- high loads
- also available with step cutting
FR = Guide ring
K = Piston
S = rod
LN = Linear groove
MN = center groove
SN = Spiral groove
L-shaped guide rings
- cost-effective
- low friction
- easy mounting in closed grooves
- high loads
- small axial installation space
F = Guide ring
L = L-shape
K = piston
S = rod
LN = Linear groove
MN = center groove
SN = Spiral groove
T-shaped guide rings
- standard
- cost-effective
- made of POM many dimensions available as molded parts
- low friction
- easy assembly in closed grooves
- high loads
- small axial installation space, thus short piston designs possible
F = Guide ring
L = L-shape
K = piston
S = rod
LN = Linear groove
MN = center groove
SN = Spiral groove
U-shaped guide rings
- low friction
- easy mounting in closed grooves
- high loads
- small axial installation space, thus short piston designs possible
F = Guide ring
L = L-shape
K = piston
S = rod
LN = Linear groove
MN = center groove
SN = Spiral groove