Master powder and sticky media

RaXa

The Convenient Shaft Seal

This sealing technology is designed for low-speed applications and such with the risk of dry running or insufficient lubrication with liquid medium. Therefore, it is the perfect addition to our product range.

Basis for success

Innovative Concept

RaXa is a flexible packing system with an innovative technology. There are no highly precise sealing surfaces or springs and nothing in the cartridge is fragile. The seals use a flexible sealant as sealing medium, which remains compressed in the system. A gas-operated piston ensures that the sealant is held at a pressure slightly above the pressure to be sealed. The sealant acts as an adaptive stationary seal and compensates shaft movements without affecting the sealing quality.

powder
Powder
glue
Sticky media
air-lock
Important fields of use

Applications

  • Screw conveyors
  • Vacuum dryers
  • Ball mills
  • Screw pumps
  • Cellular wheel sluice
  • Rotary valve
  • Agitators
  • Mixers
screw-conveyor
Adaptable models

Variants

  • Split seals
  • Cartridge designs
    with integrated
    bearing
  • Designs to compensate
    increased radial
    misalignments
  • Designs according
    to ATEX
  • Seals with
    upstream
    cooling flange
split-seal
Strong facts in comparison

Life Cycle Costing

Stuffing box packings are simple and inexpensive seals. However, they are not technically tight and require a high maintenance effort. A very good sealing function is achieved with a double mechanical seal with barrier fluid. On the other hand, this requires a supply system that needs to be serviced regularly. In this field of tension, RaXa offers a high-quality seal with minimal maintenance requirements and moderate costs.

life-cycle-costing-table

A = purchase. The illustration is based on a cost estimate for the sealing of a shaft Ø 80 mm.

They make the difference

Properties

Packing

Mechanical seal with
supply system

RaXa The Convenient
Shaft Seal

Technically tight 1)
None sensitive components
Low maintenance effort

1) Seals are considered ‘technically tight’ if a barrier medium is introduced between the medium to be sealed and the atmosphere (double seal with barrier medium).

METAX design

Your Advantages

  • Easy mounting due to pre-assembled units
  • Long maintenance intervals
  • Robust design with high fault tolerance during installation and operation
  • Permanently technically tight
  • High sealing function ensures a clean surrounding of the technical plant
  • Lowered maintenance costs
  • Low contamination by the sealant

Innovative technology between packing and mechanical seal

Flexible Packing Systems for Sealing Rotating Shafts

You are interested in understanding better how the flexible packing system differs from mechanical seals and packings and which functional principle makes it so innovative? Learn more about this in our technical article and discover the available sealing options.