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SELECTED PACKING STYLES
In all performance sectors compatible for the absolute majority of applications.
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
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
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
Excellent heat conductivity; Maximum protection of shaft against wear (HRC 25 is sufficient); Extended MTBF; Easy and safe installation and handling; No ageing process
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
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
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
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.
Who benefits from high-quality sealing solutions?
With decades of experience in the mining industry, ProPack AG understands the importance of high reliability and maximum equipment performance in harsh environments such as abrasive slurries. To meet these challenges, we develop components that are durable enough to withstand extreme abrasiveness.
From water extraction to wastewater treatment, not only the harmlessness of the materials used, but also the durability of the materials play a role. ProPack AG offers innovative solutions, efficient, cost-effective products, constructed from high-strength, abrasion-resistant fibers.
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.
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.
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.
with carbon fiber corner reinforcement
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.
heat conductive ePTFE Yarn and form stable PTFE fibers