STASSKOL reciprocating compressor sealing systems and components

STASSKOL sealing engineering (Germany / Burckhardt Compression): pressure packings, intermediate and wiper solutions, piston rings, and compressor valves.

High pressure piston rod packings for reciprocating compressors

STASSKOL piston rod packings PRP are engineered for double-acting reciprocating compressors to seal the cylinder chamber on the crank side. The packing assemblies handle intense differential gas pressures and are supplied as assembled units or separate sealing ring elements.

Complete packing assemblies featuring integrated cooling channels and oil lube ports
Renewable sealing ring elements engineered for lubricated and dry running machines
Segmented ring pairs featuring radial and tangential gap overlap geometries
Anti-extrusion backup rings designed for extreme differential process pressures

Patented STASSKOL single sealing rings for compressor rods

The STASSKOL single sealing ring is patented under number 10 2006 015 327 and combines traditional sealing and cover elements into a single integrated unit. The symmetrical configuration provides gradual cylinder pressure drop and maintains reliable sealing during continuous wear.

Symmetrical overlap design preventing gas leakage across operating cycles
Compact ring width enabling straightforward installation in packing cups
Reduced piston rod surface wear through balanced mechanical contact loading
Suitability for hydrogen, technical oxygen, and petrochemical process streams

Oil wiper packing assemblies of the BOSS and SOSS series

STASSKOL oil wiper packings SOSS and BOSS prevent lubricating oil migration from the crankframe toward the distance piece. The non-metallic BOSS solution pairs two three-piece main scrapers, a garter spring ring, and a preliminary scraper for clean rod oil removal.

BOSS balanced scraper geometry delivering uniform contact along the rod
Generous drain groove passages guiding scraped oil directly to the sump
Operation in horizontal, vertical, and angled compressor frame designs
Reduced lube fluid consumption and prevention of downstream gas fouling

Intermediate packing assemblies for distance piece compartments

STASSKOL intermediate packings seal partition bulkheads within two-compartment distance pieces when handling toxic, flammable, or aggressive process gases. Labyrinth thread patterns induce purge gas rotation around reciprocating rods, preventing hazardous gas mixing.

Isolation of distance piece chambers handling toxic or flammable media
Labyrinth rings with directional threads optimizing purge nitrogen flow
Field replacement of wear rings without disconnecting piston rod joints
Full compliance with API 618 criteria for heavy petrochemical machinery

Piston rings, guide bands, and rider rings for cylinders

STASSKOL piston rings maintain uniform contact pressure against cylinder walls, delivering optimum compression efficiency in lubricated and dry operations. In non-lubricated compressors, filled polymer materials compensate for mechanical wear and protect cylinder liners.

Compression rings with straight, angle, and step cut joint designs
Rider and guide bands centering heavy pistons inside the cylinder bore
Compounds tailored for dry oxygen compression and food-grade PET blowing
Thermal resistant polymer compounds supporting continuous heat to 200 °C

ESKAmaxflow compressor valves and advanced tribological polymers

STASSKOL ESKAmaxflow valves govern process gas, air, and refrigerant circuits within compressor equipment. Proprietary tribological polymer compounds based on PTFE, PEEK, and polyimides are formulated for intense pressures across hydrogen and chemical processing industries.

Automatic ESKAmaxflow compressor valves delivering optimized flow capacity
Valve plates and spring assemblies machined from corrosion resistant alloys
Proprietary tribological blends formulated from modified PTFE and PEEK resins
Ultra-high pressure sealing components engineered for LDPE hyper compressors

Industrial engineering heritage and manufacturing profile of STASSKOL in Germany

Located in Stassfurt in Saxony-Anhalt, Germany, STASSKOL GmbH operates as an established member of the Swiss Burckhardt Compression Group.

The enterprise possesses decades of engineering experience in developing and manufacturing precision sealing solutions for reciprocating compressors of all configurations.

The modern production plant in Stassfurt combines CNC machining cells with a dedicated laboratory focused on polymer tribology research.

STASSKOL solutions are supplied to compressor builders and operate across chemical synthesis, petroleum refining, gas transmission, and hydrogen plants in more than fifty countries.

Piston rod pressure packings PRP and patented single sealing rings

STASSKOL PRP series piston rod pressure packings seal cylinder compression chambers on double-acting reciprocating compressors along the crank frame side. A core technological asset is the patented single sealing ring protected under patent number 10 2006 015 327.

This engineering innovation combines the primary sealing ring and protective cover ring into a compact integrated component.

Symmetrical gap overlap geometry ensures progressive cylinder pressure reduction along the rod length, delivering dependable gas sealing even under significant mechanical friction wear along contact faces.

Oil wiper packings of the BOSS and SOSS series for compressor crankframes

To prevent lubricating oil migration from the compressor crankframe toward process compartments, STASSKOL manufactures dedicated SOSS and BOSS series wiper packings. These packings are installed on horizontal, vertical, and angled reciprocating compressors.

The non-metallic BOSS arrangement integrates two three-piece main oil scrapers with precision edge geometry, a tension garter spring, and a preliminary scraper.

Calibrated contact angles and deep drain passages ensure unimpeded return of scraped oil toward the oil sump, protecting process gases from lube contamination.

Intermediate barrier packings for toxic and combustible process gases

When compressing flammable, toxic, or hazardous process gases, compressor configurations incorporate two-compartment distance pieces compliant with API 618 specifications.

STASSKOL intermediate packings are mounted on partition bulkheads to isolate process media from the surrounding plant atmosphere and crankframe.

Standard intermediate packing designs incorporate directional threads within the labyrinth ring that impart rotational momentum to buffer nitrogen around reciprocating rods. Technicians can replace renewable wear elements on site without dismantling crosshead rod couplings.

Piston rings and rider bands for dry running and lubricated cylinders

STASSKOL piston rings and rider bands provide constant radial contact pressure against cylinder liners, maintaining high volumetric compression performance. In dry running non-lubricated compressors handling pure technical oxygen or PET blow molding streams, contact band wear is inevitable.

To compensate for material loss, STASSKOL utilizes filled polytetrafluorethylene compounds enriched with mineral and carbon additives that promote self-lubricating surface transfer. Rider rings keep heavy pistons centered in cylinder bores, eliminating metal scoring and extending overhaul intervals.

ESKAmaxflow valves and high performance polymers for hydrogen systems

The wear component portfolio is completed by ESKAmaxflow automatic compressor valves that regulate process gas, air, and refrigerant circuits. The valves feature aerodynamically optimized flow paths providing elevated throughput with minimal pressure drops.

In hydrogen fueling stations, synthesis gas processing, and high pressure plants producing low-density polyethylene, STASSKOL utilizes proprietary polymer materials formulated with PEEK and polyimides.

The compounds retain structural integrity and dimensional stability under extreme differential pressures and thermal loads.

STASSKOL and model names are trademarks of their respective owners and are used only to identify the equipment for which we source parts. SpareX is not an official dealer, distributor or representative of STASSKOL and is not affiliated with the trademark owner. Origin, documents and warranty are stated for each item in the quotation.