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Backup Rings

17 Jan 2020

ST-12

Features

  • Triangular Anti Extrusion Ring for Rod applications
  • Special housing designs required.
  • Reduced gap extrusion of the elastomer seal and/or higher pressures up to 700bar possible.
  • Available as split and non-split version.

Application

Dynamic and static applications in reciprocating rods in hydraulic cylinders, plungers, etc. Unfavorable tolerances and wide gap dimensions.

Installation

Snap-in installation

17 Jan 2020

ST-11

Features

  • Active Anti Extrusion Ring for Rod Seal RS-02.
  • Reduced gap extrusion of the elastomer seal and/or  higher pressures up to 700bar possible.
  • Prevention of twisting of the seal in the groove.
  • Available as split non-split version.

Application

Dynamic and static applications in reciprocating pistons and rods in hydraulic cylinders, plungers, etc.

Unfavorable tolerances and wide gap  dimensions.

Installation

Snap-in installation

17 Jan 2020

ST-09

Features

  • Especially designed for use with O-Rings.
  • Improved form stability of the elastomer O-Ring.
  • Bigger contact area of the O-Ring compared to BUR08 creates in less deformation.
  • Normally cut at an angle for easy installation, but also available as non-split version.
  • Low dynamic friction.
  • Low break-away forces after long standstills.
  • Activated back-up rings reduce gap extrusion and prevent twisting of the seal in the groove.

Application

Dynamic and static applications in reciprocating pistons and rods in hydraulic cylinders, plungers, etc.

Unfavorable tolerances and wide gap dimensions. Intensely pulsating pressures and pressure change.

Installation

Snap-in installation

17 Jan 2020

ST-08

Features

  •   Normally cut at an angle for easy installation, but also available as non-split version.
  •   Low dynamic friction.
  •   Low break-away forces after long standstills.
  •   Activated back-up rings reduce gap extrusion and prevent twisting of the seal in the groove.

Application

Dynamic and static applications in reciprocating pistons and rods in hydraulic cylinders, plungers, etc.

Unfavorable tolerances and wide gap dimensions. Intensely pulsating pressures and pressure change.

Installation

Snap-in installation; split or unsplit