CORTech AG

What CORTech AG does

CORTech AG is a Swiss producer, distributor, and service company specializing in industrial sealing technology, headquartered in Strengelbach, Aargau, with operations dating to 1981 (originally Wehrli Dichtungstechnik, later Latty Dichtungstechnik AG from 1998 to 2022). The company distributes and supports a broad product portfolio across six categories: mechanical seals (Gleitringdichtungen) including cartridge seals, single-acting seals, and OEM seals; packings (Packungen) such as the Propack and LATTYflon series; rotary joints (Drehdurchführungen) from H+Z and Filton; pipe swivel joints; expanding shafts and clamping bearings for paper/film production; and static seals (elastomer, fiber composite, PTFE, and graphite gaskets). The portfolio spans premium OEM brands including Fluiten, LATTY, KSB, H+Z, Filton, Propack (Freudenberg), Klinger, Garlock, and Gore/Sigraflex, with products carrying extensive certifications (DVGW, WRAS, FDA, BAM, TA-Luft, USP Class VI, FIRE SAFE API 607, and others) for chemical, oil and gas, food/pharmaceutical, and general industrial applications.

The business operates through a sales-led, direct-distribution model staffed by 5 employees: CEO/Owner Sandro Cortesi oversees the operation with regional sales representatives covering East Switzerland (Kay Hauswirth), Central Switzerland (Michel Zimmerli), and West Switzerland (Sébastien Gaillard), while Workshop Manager Sandro Eilmes leads revision/refurbishment services. The company generates revenue from three streams: one-time product sales of new sealing components, professional services revenue from revision/refurbishment of mechanical seals (including third-party brands such as Eagle Burgmann, John Crane, Flowserve, KSB), and engineering consulting covering modifications, lifetime optimization, and material development. Pricing is quote-based via phone (062 752 20 84) and email ([email protected]), with no public price list. Following a 2018 management buyout, the company relocated to 900+ m² modernized premises in Strengelbach in February 2021, rebranded to CORTech AG in 2022, and added ZEISS DuraMax 3D coordinate measurement capability in 2025. All operations are confined to the Swiss domestic market with bilingual German/French commercial coverage.

Name

CORTech AG

Legal name

CORTech AG

Website

https://cortechag.ch

Company type

Private

Founded year

1981

Operating status

Operating

Headcount range

1–10 employees

Short description

CORTech AG is a Swiss industrial sealing technology distributor and revision services provider serving chemical, oil and gas, food, pharmaceutical, and mechanical engineering customers across Switzerland with mechanical seals, packings, rotary joints, and static seals from premium OEM brands.

Ownership category

akta.pro rank

Product category

Industrial Sealing Components

NAICS

Gasket, Packing, and Sealing Device Manufacturing (339991)

SIC

Gaskets, Packg & Sealg Devices & Rubber & Plastics Hose (3050), Fabricated Rubber Products, Nec (3060), Adhesives & Sealants (2891)

akta.pro primary industry

Seals, Gaskets & Fluid Connectors (O-rings, packings, rotary seals, quick couplers) (IMAHAGAI)

akta.pro secondary industry

Seals, Gaskets & O-Rings (Industrial Elastomer) (IMANALAC)

Keywords

• Mechanical seals
• Industrial sealing solutions
• Rotary joints
• Static gaskets
• Expanding shafts

Headquarters

HQ city

Strengelbach

HQ country

Switzerland

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Personnel, Operations, Marketing or Sales, Technology or R&D, Infrastructure

Revenue model

1. Product Sales: Sale of mechanical seals, packings, rotary joints, static seals, expanding shafts, and pipe swivel joints. Products are sold in various configurations including cartridges, single-acting seals, OEM specific designs, and custom solutions.
2. Revision/Refurbishment Services: Core business service involving overhaul and repair of mechanical seals, rotary joints, and expanding shafts. Generates high flexibility and cost savings for customers in maintenance.
3. Engineering Consulting: Technical consulting including modifications, lifetime optimization, theoretical calculations for optimal seal usage, and material development support with manufacturers.

Pricing tiers

Go-to-market motion1 record

Distribution channels2 records

Marketing channels3 records

Core offering

CORTech AG is a Swiss production, trading, and services company that sells industrial sealing technology including mechanical seals (cartridge, single-acting, and OEM types for pumps and rotating machinery), compression packings, rotary joints, pipe swivel joints, static seals (elastomer, fiber composite, PTFE, graphite), and expanding shafts and clamping bearings. The company also provides factory-authorized revision/refurbishment of its own and third-party sealing products, engineering consulting for seal modification and lifetime optimization, and precision 3D measurement services using a ZEISS DuraMax coordinate measuring machine. Products are distributed for brands including LATTY, Fluiten, KSB, Filton, H+Z, Propack/Freudenberg, Klinger, Garlock, Gore, and Aeroseal.

Product overview

CORTech AG is a Swiss production, trading, and services company specializing in sealing technology with over 40 years of experience. The product portfolio centers on six core product categories: (1) Mechanical seals (Gleitringdichtungen) including cartridge seals (CORTech FS22, TF2001, Fluiten CB2 series, LATTY B series, Split Seal), single-acting seals (Fluiten and LATTY types), and OEM seals for KSB pumps; (2) Packings (Packungen) including Propack series (S27K, S12K, TP30, P2P, P7, S6SI, TP619, TP63, A19, TP1, A33, A99), LATTYflon series (4488, 4757, 4758), Reingraphit pure graphite rings, and packing tools; (3) Rotary joints (Drehdurchführungen) including H+Z series (7101, 7201, 7501, T7600, 9001 variants), Filton R.E., and multi-channel variants (MRF, MBB MK, MBBE, UDW); (4) Pipe swivel joints (SJF, SJG, SJK) for flexible pipeline connections; (5) Expandable shafts and safety bearings including pneumatic shafts, clamping bearings, expansion sleeves, friction shafts, and custom builds; (6) Static seals including elastomers (NR/SBR, NBR, EPDM, VMQ, FKM), fiber composite joints (Novapress 850/880, Klinger C4400, AFM 34, LATTYgold 92, LATTYcarb 96), PTFE joints (Novaflon 100/300, Gylon 3501/3504, PTFE+25% glass), and graphite joints (Sigraflex Standard/Universal/Hochdruck, Novaphit SSTC, LATTY EFI/EFA). Services include seal revision/repair and engineering consultation, plus 3D measurement capabilities with ZEISS DuraMax technology.

Differentiator

Problem solved

Functional benefit

Products and services

• Cartridge Mechanical Seals (Gleitringdichtungen) Cartridge-type mechanical seals (including CORTech FS22, CORTech TF2001, Fluiten CB2S/CB2D/CB2Q/CB2TQ, LATTY B24810/B24610, and Split Seal) for pumps and rotating machinery, ensuring reliable sealing of liquids and gases.
• Single-Acting Mechanical Seals (Einfachwirkende Gleitringdichtungen) Single-acting mechanical seals from Fluiten (Typ SA, TBHA, US3A/UM3A, BS3A/BM3A, US4A, TSMA, UM3A Double) and LATTY (Typ U1000, U6810, B23212) for pumps and industrial applications.
• OEM Mechanical Seals for KSB Pumps OEM-distributed mechanical seals KSB Typ 192K and KSB Typ 197, designed as factory-original seals for KSB pumps.
• Compression Packings (Stopfbuchspackungen) Packings including the Propack series (S27K, S12K, TP30 FDA, P2P, P7, S6SI FDA, TP619 FDA, TP63 FDA, A19/A19OX, TP1, A33, A99), LATTYflon series (3205, 4488, 3206 AL, 4757, 4758), Reingraphit pure graphite rings, and packing tools (Packungszieher, Schneidegerät) for sealing pumps and valves through compression.
• Rotary Joints (Drehdurchführungen) Single-channel rotary joints including the H+Z series (7101, 7201, 7501, T7600, 9001 ND, 9001 RL-ND, 9001 RL-MD) and Filton Typ R.E. for safe transfer of liquids or gases from fixed to rotating components.
• Multi-Channel Rotary Joints (Mehrwegdrehdurchführungen) Multi-channel rotary joints from the H+Z series (MRF, MBB MK, MBBE, UDW) for complex applications requiring simultaneous transfer of multiple media between stationary and rotating components.
• Pipe Swivel Joints (Rohrdrehgelenke) Pipe swivel joints SJF, SJG, and SJK for safe and flexible connections between rigid or rotating pipelines.
• Pneumatic Expanding Shafts (Pneumatische Spannwellen) Pneumatic expandable shafts for production companies in the paper, film, foil, and printing industries, used for winding and unwinding rolls.
• Safety Bearings (Klapplager) Safety bearings used in paper, film, and printing industries in combination with expanding shafts.
• Expansion Sleeves (Spannhülse) Expansion sleeves for shaft applications in industrial production machinery.
• Friction Shafts (Friktionswellen) Friction shafts for industrial applications requiring controlled friction-based torque transmission.
• Custom-Built Expanding Shafts and Safety Bearings (Sonderbauten) Custom-built expandable shafts and safety bearings engineered to meet specific application requirements and maximum safety levels.
• Elastomer Static Seals Elastomer static seals in NR/SBR (natural rubber/styrene-butadiene), NBR (acrylic-butadiene), EPDM (ethylene-propylene-diene), VMQ (metal-detector-approvable silicone for food/pharma), and FKM (fluoroelastomer for high-temperature and chemical resistance).
• Fiber Composite Gaskets (Faserverbund Dichtungen) Fiber composite gaskets including Novapress 880 (high-pressure, aramid/NBR binder, DVGW/SVGW/WRAS approved), Novapress 850 (DVGW/W270/FDA), Klinger C4400, AFM 34 (DVGW/Fire Safe/BAM/TA-Luft), LATTYgold 92 (BAM/PMUC/WRAS/DVGW), and LATTYcarb 96 (BAM/WRAS/KTW/TUV).
• PTFE Gaskets (PTFE Dichtungen) PTFE static seals including Novaflon 100, Novaflon 300, Gylon 3504, Gylon 3501, PTFE + 25% glass, and PTFE rein, for chemical, petrochemical, food, and pharmaceutical applications with various certifications (FDA, TA-Luft, BAM, USP Class VI).
• Graphite Gaskets (Graphit Dichtungen) Graphite sealing plates including Sigraflex Standard, Sigraflex Universal, Sigraflex Hochdruck, Novaphit SSTC (DVGW/TA-Luft/BAM/Fire Safe approved), LATTY EFI, and LATTYgraf EFA (BAM approved) for extreme temperatures and high-pressure applications.
• Revision and Refurbishment Service Core business service for complete overhaul and refurbishment of mechanical seals, rotary joints, and expanding shafts, including third-party products from Eagle Burgmann, John Crane, LATTY, Flowserve, KSB, and others, providing customers flexibility and cost savings in maintenance.
• Engineering Service Engineering consulting services including seal modifications, lifetime optimization, theoretical calculations for optimal seal usage, and material development with manufacturers.
• ZEISS DuraMax 3D Measurement Service Fully automatic 3D coordinate measurement service for precise quality control of steel, silicon carbide, and other material components, with documented measurement results delivered to customers.

Quantifiable outcome

• High flexibility and cost savings in maintenance through competent revision services
• +1 more outcomes

Named customers5 records

Segments5 records

Ideal customer profiles5 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature8 records

Partnerships

13 partnerships are on record, tiered core, major and minor.

• ZEISScoreTechnology or Integration · 1 January 2025CORTech AG acquired the fully automatic ZEISS DuraMax 3D coordinate measuring machine for precise quality control of components in steel, silicon carbide, and other materials, with measurement results transmitted in customer-accessible reports.
• FiltonmajorTechnology or Integration · 1 January 1987Established since 1987, distribution of Filton rotary joints (Type R.E.) for transferring liquids or gases to rotating components.
• Third-Party Product Service CapabilitycoreOthersCORTech AG provides revision services for third-party sealing products including Eagle Burgmann, John Crane, LATTY, Flowserve, Hilge, Sawa, Fristam, Alfa Laval, KSB, Haag & Zeissler, Maier Heidenheim, Deublin, and Boschert. This capability demonstrates technical competence across multiple major sealing brands.
• LATTY InternationalcoreTechnology or IntegrationLong-standing partnership with LATTY International including product distribution and historical company name integration (Latty Dichtungstechnik AG from 1998-2022). Products include LATTYflon packings, LATTYgold and LATTYcarb gaskets, and LATTYgraf graphite seals.
• FluitenmajorTechnology or IntegrationDistribution partnership for Fluiten mechanical seals including CB2S, CB2D, CB2Q, CB2TQ cartridge seals and various single-acting seal types (SA, TBHA, US3A/UM3A, BS3A/BM3A, US4A, TSMA).
• KSBmajorTechnology or IntegrationDistribution of KSB OEM mechanical seals including Type 192K and Type 197 for KSB pumps.
• H+Z (H.+Z.)majorTechnology or IntegrationDistribution of H+Z series rotary joints including Series 7101, 7201, 7501, T7600, 9001 ND, 9001 RL-ND, 9001 RL-MD, and multi-channel Series MRF, MBB MK, MBBE, UDW.
• Propack (Freudenberg)majorTechnology or IntegrationDistribution of Propack packing series including S27K, S12K, TP30 (FDA), P2P, P7, S6SI (FDA), TP619 (FDA), TP63 (FDA), A19/A19OX, TP1, A33, A99.
• KlingermajorTechnology or IntegrationDistribution of Klinger fiber composite gaskets including Klinger C4400 for high-pressure applications.
• Garlock/KlingermajorTechnology or IntegrationDistribution of Novapress fiber composite gaskets (850, 880) and Novaflon PTFE gaskets (100, 300) for various industrial sealing applications.
• Gore/BurgmannmajorTechnology or IntegrationDistribution of expanded graphite sealing plates including Sigraflex Standard, Universal, and Hochdruck for high-temperature applications.
• French SME (Expanding Shafts)coreStrategic or Co-development PartnerStrategic partnership with a French second-generation family SME for development and manufacture of expanding shafts and clamping bearings, providing maximum safety levels.
• Windwork Consulting GmbHminorImplementation/ SI/ Consulting PartnerWeb design and development partner responsible for the company's website design and implementation.

Scale indicators3 records

Recent moves8 records

Expansion highlights4 records

Broad incumbents

• Freudenberg Sealing Technologies: Global sealing manufacturer and parent of the Propack brand whose packings CORTech distributes. Overlaps in compression packings, gaskets, and engineered sealing materials; serves the same food, pharma, and chemical customers as CORTech across Switzerland and beyond.
• EagleBurgmann (Flowserve): Global market leader in mechanical seals and supply partner whose products CORTech services under revision. Directly comparable product portfolio (cartridge seals, single-acting seals, packings) and customer base (pumps, chemical, oil & gas), but operates as a multinational manufacturer rather than a regional specialist distributor.
• Garlock (EnPro Industries): Manufacturer of fluid sealing products including gaskets, packings, and expansion joints — brands CORTech distributes (Novapress, Novaflon, AFM 34). Direct competitor in static sealing, with broader industrial customer overlap in chemical and petrochemical.
• KSB (Swiss operations): Global pump and valve manufacturer whose OEM seals (Type 192K, Type 197) CORTech distributes in Switzerland. Overlaps in pump-sealing technology and Swiss industrial customers; KSB operates at vastly larger scale as an integrated pump OEM rather than a sealing specialist.
• John Crane: Major mechanical seal and rotating equipment sealing supplier whose products CORTech revises. Competes with CORTech's Fluiten and LATTY OEM seal lines for the same Swiss pump and rotating-equipment customers, but at a much larger global scale.
• Trelleborg Sealing Solutions: Global manufacturer of precision seals, O-rings, and elastomer static seals. Overlaps with CORTech's elastomer static seal lines (NBR, EPDM, FKM, VMQ) for chemical, food, and pharmaceutical customers, but at a much larger portfolio scale.

Direct peers

• Filton: Italian/UK manufacturer of rotary joints distributed by CORTech since 1987. Comparable as a specialist in rotary unions and fluid transfer technology serving industrial customers in paper, printing, and process industries.
• LATTY International: French sealing technology manufacturer and CORTech's longest-standing principal (1998 partnership). LATTYflon packings, LATTYgold gaskets, and LATTYgraf graphite seals are core to CORTech's range; LATTY is the closest direct peer in product focus (packings, gaskets, mechanical seals) and customer base (chemical, food, pharma).
• AESSEAL: UK-based mechanical seal specialist with a strong European service and refurbishment network. Closest analog to CORTech's revision-led, multi-brand service model for mechanical seals, and competes for the same rotating-equipment maintenance customers.
• James Walker: UK specialist in compression packing, gaskets, and elastomer seals. Comparable to CORTech in product mix (packings, gaskets, elastomer seals) and in providing engineering support for fluid sealing applications across chemical, oil & gas, and general industrial customers.

Market position

Strengths1 record

Weaknesses1 record

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/cortech-ag

Compliance17 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles6 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about CORTech AG