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Chemical Processing Seals

CASE STUDIES

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Kalrez® KVSP™ valve stem packing saves 56.000 £

Kalrez® KVSP™ valve stem packing saves 56.000 £

Kalrez® KVSP™ valve stem packing, a solution to help reduce fugitive emissions, valve leakage and provide improved control — saves BP Chemical over 56.000 £ per valve annually, cuts shutdowns.

Kalrez® O-rings for Hydrogen Sulfide Removal

Kalrez® O-rings for Hydrogen Sulfide Removal

Amine units for hydrogen sulfide removal (H2S) at high temperatures use elastomers like Kalrez® Spectrum™ 6380 FFKM parts for resistance to amines. 6380 helps extend MTBR of valves and pumps in amine service.

Kalrez® Spectrum™ 6375 O-rings for PTFE replacement

Kalrez® Spectrum™ 6375 O-rings for PTFE replacement

Kalrez® Spectrum™ 6375 O-rings for the chemical process industry are used as PTFE replacement in a wide range of chemicals. Dow AgroSciences have extended the lifetime of seals fitted to their product filling line from one day to an average of two months, an improvement of some 6000%, by replacing O-rings of PTFE.

Metal O-rings Replacement

Metal O-rings Replacement

By replacing metal O-rings with DuPont™ Kalrez® O-rings in gear pumps designed to operate in temperature up to 300 °C and pressure of 100 bar, Gather Industrie GmbH, Mettmann, Germany, has solved the problem of seal deformation.

O-rings in Pressurized Water Reactor

O-rings in Pressurized Water Reactor

Due to the combination of extreme temperature, pressure and chemical environments, Kalrez® 0090 was used in a series of mechanical seals employed in the operation of boiler feed pumps for pressurized water reactors.

Parts for Amine Resistance

Parts for Amine Resistance

A major chemical company switched to Kalrez® Spectrum™ 6380 perfluoroelastomer parts to improve amine resistance & extend mean time between repairs. Improvement of up to 3x in MTBR achieved in a mechanical seal for hot, aggressive amines.

Process Instrument Gaskets

Process Instrument Gaskets

By switching from gasket seals of PTFE to custom gaskets of DuPont™ Kalrez® perfluoroelastomer parts in the sensor head of a process instrument refractometer used by the food, pulp and paper and chemical industries, process instrument manufacturer.

Sealing Solutions for Clamping Systems

Sealing Solutions for Clamping Systems

Heavy duty hydraulic clamping systems developed and manufactured by Hilma-Römheld are used to hold large hot dies in exact position on forging machines, use Kalrez® Spectrum™ 7075 sealing solutions.

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