STB service technology

What STB service technology does

STB Service Technik GmbH (legal entity: STB-Service Technik Beratung GmbH) is a 100% family-owned German precision-engineering firm founded in 1994 in Strausberg near Berlin. The company manufactures, sells, services, and repairs mechanical seals (Gleitringdichtungen) and special seals for rotating equipment including pumps, compressors, blowers, turbines, and agitators, alongside a full line of seal support and supply systems (API Plan 32/52/53A/53B/54, API 614, thermosiphon, coolers, hand pumps, level switches, refill trolleys). The product portfolio spans the proprietary Siron family (ecoSiron, proSiron), REMEX/phREMEX agitator seals, split seals, carbon and graphite seal rings, OEM replacement seals (Blackmer, Goulds, Sulzer, Tartarus), and a specialized cryogenic/space-seal line for aerospace turbopumps; manufacturing includes in-house seal-ring production in carbon, silicon carbide, tungsten carbide, and ceramic materials, with ~3 tonnes of graphite stock and 72-hour express delivery on SiC rings.

Name

STB service technology

Legal name

STB-Service Technik Beratung GmbH

Website

https://stb-dichtungen.de

Company type

Private

Founded year

1994

Operating status

Operating

Headcount range

51–100 employees

Short description

STB Service Technik GmbH is a family-owned German mechanical-seal manufacturer and service provider, founded 1994 in Strausberg, supplying cartridge, component, split, agitator, cryogenic, and OEM-replacement seals plus API seal-support systems to industrial, process, and aerospace customers across Germany, Europe, and selected global markets.

Ownership category

akta.pro rank

Product category

Industrial Sealing Manufacturing

NAICS

Gasket, Packing, and Sealing Device Manufacturing (339991), Aerospace Product and Parts Manufacturing (3364)

SIC

Gaskets, Packg & Sealg Devices & Rubber & Plastics Hose (3050)

akta.pro primary industry

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

akta.pro secondary industries

Seals, Valves & Auxiliary Components (for Pumps/Compressors) (IMAHANAH), Aerospace Seals, Gaskets, O-Rings & Elastomeric Components (IMABANAF)

Keywords

• Mechanical seals
• Industrial sealing solutions
• API 682 seal support
• Cryogenic seals
• Rotating equipment maintenance

Headquarters

HQ city

Strausberg

HQ country

Germany

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Mechanical Seal Products: Manufacturing and sale of mechanical seals including cartridge seals (ecoSiron, proSiron, Siron), component seals, double cartridge seals, split seals, agitator seals, marine seals, and specialized OEM replacement seals. Standard cartridge seals available from 12mm to 650mm shaft diameter.
2. Seal Ring and Counter-Ring Manufacturing: Production of seal rings and seal faces in various materials including resin-impregnated carbon, antimony-impregnated carbon, silicon carbide (SiC), tungsten carbide (WC), and ceramic. Approximately 3 tonnes of graphite materials in stock, with diameter ranges up to 570mm.
3. Mechanical Seal Repair Service: Repair of mechanical seals from all major manufacturers since 1996. Repair workshop approximately 350m² with modern equipment. Free quotes offered. As a seal ring manufacturer with extensive machine park, repairs can be completed in shortest times. Pressure testing performed on cartridge seals before delivery.
4. Plant Service and Maintenance: Contract partner for plant and mechanical seal service for major corporations. Services include maintenance and repair of pumps, motors, couplings, agitators, gearboxes, fans, mixers, seal systems, coating, balancing and machining of centrifuges. Vibration measurements with VIBSCANNER and OMNITREND, laser alignment with OPTALIGN, certified per ISO 10816-3.
5. Seal Support Systems: Supply systems per API plans (32, 52, 53A, 53B, 54) and API 614 lubricating systems. Products include thermosiphon systems (TS-Poseidon, SB-9, SB-2.5), barrier fluid units (NSE-53, NSE-54), STB Cooler, stainless steel hand pumps, level switches, and refill trolleys. Accessories include flow sensors, level switches, thermometers, pressure gauges, and heat exchangers.
6. Industrial Supplies Trading: Trading partner for industrial pumps, gearboxes, motors, couplings, valves, and accessories from renowned manufacturers. CIRCex-10 magnetically coupled circulation pump available (FDA certified), max 40 bar(g), max 100°C, 100% stainless steel construction.

Go-to-market motion2 records

Distribution channels4 records

Marketing channels10 records

Core offering

STB GmbH manufactures, sells, and services mechanical seals (Gleitringdichtungen), special seals, and seal support systems for rotating equipment such as pumps, compressors, blowers, turbines, and agitators. The company designs and produces its own product families (ecoSiron, proSiron, REMEX, Tartarus), in-house seal rings and counter rings in materials including carbon, silicon carbide, tungsten carbide, and ceramic, and provides complementary supply systems per API Plans 32, 52, 53A, 53B, 54 and API 614, alongside plant maintenance, repair, and overhaul services.

Product overview

STB GmbH is a German mechanical seal manufacturer founded in 1994, offering a comprehensive portfolio of sealing solutions and related services. The core product line centers on mechanical seals (Gleitringdichtungen) including the Siron brand family with ecoSiron (single-acting cartridge) and proSiron (double-acting cartridge) seals, component seals, split mechanical seals, and agitator seals (REMEX/phREMEX). The company also produces carbon seals, graphite seal rings, seal rings/counter rings, and packings. A significant product category includes supply/support systems (Versorgungssysteme) comprising API Plan 32, 52, 53A, 53B, 54, API 614, TS-Poseidon thermosiphon systems, STB Coolers, stainless steel hand pumps, SB-2.5 and SB-9 tanks, level switches, refill trolleys, and flow regulators. OEM replacement seals are offered for Blackmer pumps (BC-01, BMS-02), Goulds pumps (S230), and plunger pump systems (Tartarus Seal Kit, PulperMex). Specialized offerings include cryogenic seals for turbopumps and CIRCex-10 circulation pumps. Services encompass mechanical seal repair, plant maintenance, coating, performance testing, and industrial supplies. The company serves paper, power plant, chemical, steel, oil and gas, food, pharmaceutical, and water industries across Germany, Europe, Asia, and America.

Differentiator

Problem solved

Functional benefit

Brands

• Siron: Cartridge mechanical seal product line including ecoSiron (single-acting) and proSiron (double-acting) variants.
• REMEX
• Magforce
• Tartarus
• CIRCex-10

Products and services

• ecoSiron Single-Acting Cartridge Mechanical Seal Single-acting cartridge mechanical seal with Plug & Seal design for easy installation in pumps, compressors, hydraulic oil pumps, air conditioners, and service water pumps. Temperature range -40°C to 180°C, pressure up to 25 bar, sliding velocity up to 16 m/s.
• proSiron Double-Acting Cartridge Mechanical Seal Double-acting cartridge mechanical seal for API seal concepts (Plans 21, 22, 23, 31, 52, 53A/B, 54) with stationary design and hydrodynamically unloaded seal faces. Temperature up to 180°C (optional 270°C), pressure up to 20 bar, sliding velocity up to 25 m/s.
• REMEX / phREMEX Agitator Seal Agitator seal family for mixing applications in paper, chemical, pharmaceutical, and food processing. Includes double and single seal configurations with antibacterial surface option for food/pharma, integrated barrier fluid connections, and standard DIN 28137 flanges.
• Einfache Patronendichtung (Single Cartridge Seal) Single-acting cartridge mechanical seal for pumps, compressors, hydraulic oil pumps, air conditioners, and service water pumps. Components pre-assembled in cartridge housing mounted to pump casing for easy installation.
• Doppelte Patronendichtung (Double Cartridge Seal) Double-acting mechanical seal with barrier/quench liquid chamber between two seal face pairings. Rotation-independent, available in Tandem, Face-to-Face, and Back-to-Back arrangements per API plans. Special shaft sleeve prevents shaft damage.
• Geteilte Gleitringdichtung (Split Mechanical Seal) Horizontally split mechanical seal designed for large equipment where disassembly is difficult. Self-aligning seal face technology with precision manufacturing. Standard sizes up to 350mm diameter, up to 550mm available.
• Kyrogene Dichtungen (Cryogenic Seals) Specialized seals for turbopumps in cryogenic environments from below 80°K (-193°C) to exhaust temperatures of +1,000°K (+800°C). Seals up to 50 bar(g), with dynamic seals for liquid turbo pump fluids and gas seals at velocities up to 150 m/s. Handles liquid oxygen, methane, nitrogen, propane, kerosene, and helium.
• BC-01 Mechanical Seal for Blackmer Pumps Mechanical seal developed for Blackmer rotary vane positive displacement pumps in the TX series, used in tank trucks and refueling facilities for ships and aircraft. Compatible with TXS3E, TXSD3E, TX3E, TXD3E pump types.
• BMS-02 Mechanical Seal for Blackmer Pumps ATEX-certified cartridge mechanical seal for Blackmer rotary vane pumps in the NP series. Used in refineries, food industry, and chemical industry. Compatible with NP1.5, NP2, NP2.5, NP3, and NP4 pump types.
• Tartarus Seal Kit Seal system for plunger pumps in pipelines, hydraulic presses, injection applications, and chemical/petrochemical industries. Includes 2 special seal rings and multiple packing rings with various material combinations for high durability.
• PulperMex for Sulzer/Ahlstrom Salomix Agitators Double-acting mechanical seal for Sulzer Salomix and Ahlstrom Salomix SL/ST agitators. Relieved seal faces reduce friction values for extended service life. Compatible with Salomix SL-80 and SL-100.
• S230 Cartridge Seal for Goulds 5500 Slurry Pump Single-acting cartridge mechanical seal designed for slurry pump Goulds Model 5500 (B3) with 127mm shaft diameter. Handles sand, lime slurries, stone, and coarse coal. Operates without flush for cost minimization.
• Kohledichtungen (Carbon Seals) Comprehensive carbon seal product line including valve seals, steam end seals, segmented carbon seal rings, floating ring seals (CFS, SCFS, SCFS-LP, SCFS-CS), armored carbon seal rings, and standstill seals. Used in power plant turbines, screw compressors, rotary lobe blowers, compressors, and high-pressure valves.
• Graphitdichtringe (Graphite Seal Rings) Graphite products including graphite seals, graphite packings, graphite cords, and graphite rings for various industrial sealing applications.
• Gleitringe – Gegenringe (Seal Rings and Counter Rings) Seal rings and counter rings manufactured in resin-impregnated carbon, antimony-impregnated carbon, silicon carbide (SiC), tungsten carbide (WC), and ceramic. Large inventory with diameter ranges up to 570mm and SiC express delivery up to 72 hours.
• Packungen (Packings) Packing products including Tartarus replacement kits for plunger pumps, static packings for valves, dynamic packings for pumps/refiners/agitators/mixers, injection packings, and high-pressure packings rated up to 700°C and 150 bar.
• API Plan 32 Supply System Supply system delivering clean flushing liquid to the seal chamber when process fluid cannot be used as flushing liquid. Pressure 0 to 80 bar(g), temperature -40 to 450°C, materials 1.4401/1.4571 per API 682 4th edition.
• API Plan 53A Supply System Pressurized external barrier liquid reservoir with pressure greater than seal chamber pressure for abrasive or polymerizing products. Includes TS-9-16, TS-12-16, and NSE-53 systems.
• API Plan 53B Supply System Pressurized barrier fluid system with pressure greater than seal chamber pressure using bladder accumulators. Available with 10L, 20L, 32L, or 50L accumulator sizes in carbon steel or stainless steel construction.
• API Plan 54 Supply System Pressurized external barrier liquid system supplying clean liquid to barrier fluid seal chamber at pressure greater than seal chamber pressure. For double seals without pressure, high vapor pressure liquids, and dirty/abrasive liquids.
• API 614 Lubrication System Lubrication system for bearings and gearboxes reducing friction during operation. Extends bearing and gearbox service life. Standard pressure 10 barg, temperature 120°C, ATEX-compliant, 100% stainless steel per API 614.
• TS-Poseidon Thermosiphon System Thermosiphon system Poseidon 12L-16P for double-acting mechanical seals. Max operating pressure 6 bar, max operating temperature 60°C, nominal volume 12L, water medium. No additional barrier gas connection required.
• STB Cooler Cooler for mechanical seal supply systems per API Plans 21, 22, 23, and 31. Max coolant flow rate 38 L/min, medium flow rate up to 19 L/min. Available in models STB-Cooler 4-10, 8-10, 8-12, and 9-14S.
• Edelstahl Handpumpe (Stainless Steel Hand Pump) Stainless steel hand pump (HP-1l-SS) for pressure boosting and refilling of barrier fluid systems. Volume 1 liter (up to 3L on request), SS316L material, pressure up to 100 bar. ATEX-certified for explosive atmosphere zones.
• SB-2.5 Thermosiphon System Thermosiphon system for double-acting mechanical seal support with 2.5L nominal volume. Operating pressure 0 to 25 bar, operating temperature 0 to 200°C, test pressure 36 bar.
• Nachfüllwagen (Refill Trolley) Refill unit for barrier pressure units of process pumps and process compressors. Enables refilling during operation without plant shutdown. Standard volume 50L, design pressure up to 700 bar(g), ATEX and GOST/EAC certified.
• CIRCex-10 Circulation Pump Magnetically coupled circulation pump for the STB TS-9-16 supply system. FDA-certified for various barrier liquids, 100% stainless steel construction, max 40 bar(g), max 100°C.
• Anlagenservice (Plant Service) Comprehensive plant service including maintenance and repair of pumps, motors, gearboxes, agitators, fans, mixers, and seal systems. Includes coating services, balancing and machining of centrifuges, and centrifuge overhaul. Serves paper, power plant, chemical, steel, oil and gas, food, pharmaceutical, and water industries.
• Mechanical Seal Repair Service Mechanical seal repair service for all known manufacturers since 1996. Free quotes with damage reports, suggestions for future damage prevention. Short reaction and delivery times. Pressure testing of cartridge seals before delivery. ~350m² modern workshop.
• Beschichtung (Coating Service) Aggregate coating service that reduces friction coefficient, protects against cavitation and turbulence, provides high chemical resistance, and renews/repairs worn or corroded metal parts.
• Industriebedarf (Industrial Supplies) Industrial supplies including maintenance products (cleaners, corrosion protection, greases, lubricants), hose technology, and trading partnership for industrial pumps, gearboxes, motors, couplings, valves, and accessories from renowned manufacturers.

Quantifiable outcome

• Shortest delivery times due to in-house seal ring manufacturing and ~3 tonnes of graphite materials in stock
• +5 more outcomes

Named customers2 records

Segments13 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature7 records

Scale indicators10 records

Recent moves7 records

Expansion highlights6 records

Broad incumbents

• John Crane: John Crane is a global leader in mechanical seals and engineered technologies with a multi-billion-dollar business serving oil & gas, chemical, and power industries. It competes with STB across essentially every seal category — including cryogenic/aerospace seals — but as a much broader, multi-product incumbent.
• Flowserve: Flowserve is a large diversified flow control and seal manufacturer serving the global process industries. Its mechanical seal product line competes with STB in oil & gas, chemical, and power applications, and it benefits from a global service network that STB cannot match at its current scale.
• Trelleborg Sealing Solutions: Trelleborg Sealing Solutions is a global leader in polymer-based sealing solutions serving aerospace, automotive, and industrial markets. It competes with STB in polymer seal technology and serves overlapping aerospace end-customers, though its portfolio is much broader than mechanical seals alone.
• Garlock (EnPro Industries): Garlock, part of EnPro Industries, manufactures fluid sealing and pipeline products for industrial applications. It overlaps with STB in fluid sealing components, gaskets, and packings, though it is broader in scope than STB's mechanical seal specialization.

Direct peers

• James Walker: James Walker is a UK-based manufacturer of sealing products and engineered components for industrial and process applications. It competes with STB in mechanical seals, packings, and gaskets for the same process industries, including the European market where STB is concentrated.
• A.W. Chesterton: A.W. Chesterton manufactures industrial fluid sealing products, mechanical seals, and maintenance solutions for pumps and process equipment. It competes with STB in mechanical seals, packings, and plant maintenance services across overlapping industrial verticals.
• AESSEAL: AESSEAL is a UK-headquartered manufacturer of mechanical seals and supporting systems serving process industries globally. It competes directly with STB in cartridge mechanical seals, component seals, and seal support systems, particularly in the chemical, pharmaceutical, and pulp & paper verticals.
• Technetics Group: Technetics Group (which acquired Flex-A-Seal) manufactures mechanical seals, bellows, and engineered components for industrial and aerospace applications. It overlaps with STB in rotating equipment seals and has a meaningful aerospace presence that aligns with STB's space/cryogenic capability.
• EagleBurgmann: EagleBurgmann is one of the world's leading manufacturers of mechanical seals, headquartered in Germany with global operations. It directly competes with STB in industrial mechanical seals for pumps, compressors, and agitators across the same end-markets, including the API 682 cartridge seal space where STB's proSiron competes.

Emerging players

• Carten-Fujikin: Carten-Fujikin manufactures high-purity mechanical seals and fittings for semiconductor, pharmaceutical, and ultra-high-purity industrial applications. It is relevant as a comparable niche seal specialist serving extreme-service applications, with FDA/pharma overlap to STB's phREMEX product line.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/gmbh_stb
• YouTubeyoutube.com/channel/UCj1k_P1VYB2MPC8xRfK86_g
• Facebookfacebook.com/STB.GmbH
• LinkedInlinkedin.com/company/stb-dichtungen
• Instagraminstagram.com/stb_gmbh

Compliance14 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles4 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 STB service technology