Product applications
Who benefits from high-quality sealing solutions?
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Our machinery is constantly being expanded.
The entire machine park includes 17 braiding units, with which ProPack AG has a production capacity of over 120 tons of packages per year. From 2 to 4-diagonal braiding machines in the size segments 3 to 100 mm.

Packing types
Designed for the vast majority of sealing solutions and compatible for almost all applications.
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Valve Packing
A 37 GraphoFlon
No slip stick effect; High cross section density; High temperature resistant to minimize emissions; Non hardening, good reset capability; Coefficient of thermal expansion similar to steel; Easy to cut, install and disassemble; Low coefficient of friction minimizes the adjustment force in valves; Recommended as die formed rings; For valve applications rings should be approx. 25 - 30% compressed at installation
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Valve Packing
A 44 I Grapho Extra
Universal use valve packing; Expanded graphite of higher quality; Coefficient of expansion similar to steel; For valve applications rings should be approx. 20 - 25 % compressed at installation; Precompressed rings are recommended
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Valve Packing
A 99 Spezialgraph
Universal plant wide use in static applications; Extrusion stability through ultrafine 10 myh Inconel mesh reinforcement on each strand; Non hardening, good reset capability, coefficient of thermal expansion corresponds to the coefficient of steel; High temperature and pressure resistance; Easy to cut, assemble and disassemble; Low coefficient of friction minimizes the adjustment force in valves; For valve applications rings should be approx. 25 - 30 % compressed at installation; A 99 can be used as bullrings for style A 44 I, P60 and ARF; Die formed rings are recommended; Contains effective passive corrosion inhibitor
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Trapez Pack
Trapez-Pack®1
Excellent heat conductivity; Maximum protection of shaft against wear (HRC 25 is sufficient); Extended MTBF; Easy and safe installation and handling; No ageing process
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Trapez Pack
Trapez-Pack®18 ProStar
Preferred packing for sealing abrasive mediums in pumps, mixers, agitators and other rotating equipment; Excellent when used in crystalizing products; Low Coefficient of friction and ultimate heat conductivity; High plant standardization possibilities. Recommended Shaft Surface Hardness HRC35
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Trapez Pack
Trapez-Pack®30
Excellent Standardisation features; Cross section impregnation avoids the penetration of crystallizing mediums; Wear resistant against abrasive products and with minimal coefficient of friction; Self lubricating fiber with high Carbon content, reduced shaft wear and excellent heat transfer characteristics; Thermally balanced construction, the coefficient of expansion is similar to steel, the packing is volume stabile and does not shrink. Therefore minimal re-adjustment needed after installation; excellent chemical resistance; Recommended shaft surface hardness: HRC 45
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Trapez Pack
Trapez-Pack®63 Papermaster HS
Clean packing with ultimate heat conductivity for abrasive products in pumps and other rotating equipment; Recommended shaft surface hardness: HRC 35; Porosity filling coating increases density and protects the packing in crystallizing mediums; W-Profile Reinforcement reduces shaft wear
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Trapez Pack
Trapez-Pack®619
Wear resistant through Running Track Reinforcement; Very high heat conductivity through employment of a special heat conductive Compound;
Clean packing, no contamination of medium; Increases the operative lifetime due to high mechanical strength and excellent heat conductivity; Provides maximum protection of shaft against wear (surface hardness HRC 25 is sufficient).
Who we are
Founded more than 30 years ago, we are a global provider of sealing solutions, supplying technologies and services to almost all process industries.
Case studies
Sealing applications in practice
Industry: Pulp and Paper
Maschine: High-Pressure Feeder
Industry: Pulp and paper
After only 7 months, a graphite packing failed due to excessive extrusion. One sleeve was damaged. Causing costs: 5.000 € / 6.000 $.
The feeder was repacked with a Trapez-Pack®30. It is now 12 month in service and still running.

Trapez-Pack®30
Hochreine Kohlefaser
Industry: Chemical
Machine: Dryer
Conditions on a shaft of low speed (6 rpm), high pressure (15 bar) and high temperature (250 °C ), a package lasted 6 months. Repackaging was a costly affair each time and brought downtime costs in addition to product loss. As an improvement, the customer chose our TP55, which has already lasted 24 months.

Trapez-Pack®55
with carbon fiber corner reinforcement
Industry: Food
Machine: Isegen rotary valve
Dry PTFE packing with 4 rings 12.7 mm on a 30 mm shaft at low pressure (1 bar) and room temperature. The service life was mostly only 2 weeks and ended with uncontrollable leakage. The shaft sleeve used had to be replaced after 12 months. Our TP619 is now in use and has lasted 6 months so far.

Trapez-Pack®619
heat conductive ePTFE Yarn and form stable PTFE fibers