Special products for the oil & gas, refinery industry
In the oil/gas and refinery industries, reliability and safety are of major importance.
To support the emission-critical operations in these industries, ProPack AG offers special technical sealing components. We assist in the selection and application of these components, even under the most challenging conditions. Oil and gas production platforms and equipment are often operated in remote locations where storage space is limited. Thanks to our large storage capacity and our competent warehouse and logistics staff, most of our products can be delivered in the shortest possible time.
Packing types
Products customized for the Refinery Technology
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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 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®55 Grapho Carbo
Universal plant wide use in static and rotating applications; Wear and extrusion stability through carbon fiber corner reinforcement; Non hardening, good reset capability, coefficient of thermal expansion corresponds to the coefficient of steel; High temperature resistance and excellent heat and electric conductivity; Self lubricating, excellent use in pumps, minimizing the need of flushwater; Easy to cut, assemble and disassemble; Low coefficient of friction minimizes the adjustment force in valves; No shaft wear, excellent dry running characteristics; Rings should be compressed in valve applications at assembly approx. 15 - 20 % in height; Die formed rings are recommended
Case studies Refinery industry
Sealing applications in practice
In an oil refinery, an asphalt/heavy-oil loading pump with a 50mm shaft was sealed by 7 rings of 14mm packing. The product temperature was 135 °C and the pressure was 12bar. The speed of the shaft was 720 rpm-1. So far, a PTFE/graphite packing was used. It had to be retightened weekly and the maximum service life achieved was 3 months. A TP30 packing supplied in pre-compressed rings was used as an improvement. It lasted 12 months and had to be retightened only 1 time per month.
Trapez-Pack®30
High purity carbon fiber
In an oil refinery, a fire department pump was sealed against seawater at ambient temperature and 10 bar pressure. The pH value was close to neutral. The speed was 2900 rpm. The shaft had a diameter of 37.5 mm and 5 rings of 8 mm packing were used. When the system pressure dropped, the pump started automatically and charged the system to the required pressure level. This resulted in dry running at the beginning of the pumping time. This happened 15-20 times a day. The installed PTFE packing with inlet lubricant burned and damaged the shaft. The service life was only 2 months. The new installation used D3.5 pre-bearing rings, which protect a P1P packing against extrusion and abrasive materials. The service life achieved was 36 months.
P 1P Budget
ePTFE Fiber with Incorporated Graphite