FlowMach Mechanical Seals · Industrial Sealing Technology
Industrial Sealing Technology & Engineering Solutions
FLOWMACH
MECHANICAL SEALS
Advanced industrial sealing technology for pumps, compressors, mixers, agitators, rotating equipment and process industries. High-performance sealing solutions designed for reliability, leakage control, long service life and demanding applications across oil & gas, petrochemical, marine, power generation, chemical and industrial manufacturing sectors.
14
Seal Products
10
Product Series
API
682 Compliant
24h
Emergency Supply
OEM Replacement Compatible:
John Crane
EagleBurgmann
Flowserve
AESSEAL
Roten
Vulcan
Chesterton
Lidering
Pacific Wietz
Burgmann Industries
Complete Seal Type Range
All Mechanical Seal Types
A complete overview of the main mechanical seal designs FlowMach can supply, cross-reference, upgrade and engineer for pumps, mixers, agitators, compressors and rotating equipment.
By Arrangement
Single Mechanical Seal
General purpose pump sealing for clean and lightly contaminated fluids.
Double Mechanical Seal
Barrier or buffer fluid arrangement for hazardous, toxic, flammable or high-value media.
Tandem Mechanical Seal
Two seals in series for safety containment, emissions reduction and staged pressure control.
Back-to-Back Double Seal
Opposed seal faces for pressurised barrier systems and high-risk services.
Cartridge Mechanical Seal
Pre-assembled, pre-set seal for fast installation and reduced fitting errors.
Split Mechanical Seal
Installed around the shaft without removing the pump, coupling or motor.
By Construction
Pusher Seal
Dynamic secondary seal moves axially to maintain face loading — most common design.
Non-Pusher / Bellows Seal
Bellows-based design with no dynamic O-ring contact — ideal for sticky or crystallising media.
Balanced Mechanical Seal
Reduced hydraulic face loading for higher pressure and lower heat generation.
Unbalanced Mechanical Seal
Simple, economical seal design for low-pressure clean duties.
Inside Mounted Seal
Installed inside the stuffing box/seal chamber for most pump applications.
Outside Mounted Seal
Seal fitted outside the equipment for corrosive or space-limited duties.
By Spring / Bellows
Single Spring Seal
Robust and simple seal design for common water and utility pumps.
Multi-Spring Seal
Even face loading and compact design for process pumps and agitators.
Metal Bellows Seal
High-temperature, cryogenic and corrosive services with no dynamic elastomer.
Welded Bellows Seal
All-metal welded bellows for refinery, thermal oil and severe services.
Elastomer Bellows Seal
Flexible bellows design for water, wastewater and light chemical duty.
PTFE Bellows Seal
Chemical-resistant seal for corrosive acids, alkalis and solvents.
By Application
API 682 Mechanical Seal
Refinery and petrochemical process pump seal to API 682 4th Edition.
Dry Gas Seal
Non-contacting gas-lubricated seal for compressors and high-speed equipment.
Mixer / Agitator Seal
Top, bottom and side-entry sealing for vessels, reactors and mixing equipment.
Slurry Mechanical Seal
Hard-face seal for abrasive liquids, mining and dirty water services.
High Temperature Seal
Thermal oil, steam, hot water and heat-transfer applications up to +450°C.
Chemical Process Seal
Material-selected seal for acids, caustics, solvents and aggressive media.
By Equipment
Pump Mechanical Seal
Centrifugal, positive displacement, vertical, horizontal and multistage pumps.
Compressor Seal
Dry gas and oil/gas sealing solutions for compressor trains.
Reactor & Vessel Seal
Mechanical seals for pressure, vacuum and hazardous mixing vessels.
OEM Replacement Seal
Direct-fit replacement for existing seal references or obsolete parts.
Custom Engineered Seal
Reverse engineered or new-design seal for unusual equipment and duties.
Seal Support System
API plans, reservoirs, coolers, cyclones, thermosiphon pots and barrier fluid systems.
Selection support: Send shaft size, seal chamber dimensions, pressure, temperature, speed, media/fluid, equipment tag and existing seal reference.
FlowMach can recommend the correct seal type, face material, elastomer and flush/support plan.
Send Seal Data →
FlowMach Product Portfolio
10 Engineered Product Series
From standard general-purpose seals to extreme duty API 682 cartridge and dry gas seal systems — a complete sealing technology portfolio engineered for industrial performance.
FM-100
FM-100 Series
Single mechanical seals for general industrial pump applications.
Request Specification
FM-200
FM-200 Cartridge
Pre-set cartridge seals — single and dual — for refinery, chemical and water applications.
Request Specification
FM-300
FM-300 Heavy Duty
Metal bellows for high-temperature, cryogenic and corrosive services.
Request Specification
FM-MX
FM-MX Mixer Seals
Top, bottom and side entry seals for reactors and process vessels.
Request Specification
FM-API
FM-API Process
API 682 4th Edition Category 1, 2 and 3 seals for refinery pumps.
Request Specification
FM-SP
FM-SP Split Seals
On-site installation without disassembly. Minimal downtime.
Request Specification
FM-CHEM
FM-CHEM Chemical
Full chemical duty seals with PTFE, Hastelloy, ceramic and silicon carbide.
Request Specification
FM-HT
FM-HT High Temp
Metal bellows and ceramic face seals for thermal oil and steam up to +450°C.
Request Specification
FM-SL
FM-SL Slurry
Hard-face seals with SpiralTrac throat bushing for mining duty.
Request Specification
Product Catalogue
14 Industrial Seal Categories
Full catalogue of FlowMach mechanical seals, bearing solutions and seal support systems — each with real product imagery, technical specifications and direct consultation links.
Showing all 14 products
PUSHER / NON-PUSHER
FM-100 Series
Single Mechanical Seal
FM-100 Single Mechanical Seal
Precision-engineered single mechanical seal for general industrial pumps. Silicon carbide/carbon faces, FKM/EPDM/PTFE secondary sealing. Suitable for API Plan 11, 13 and 23 flush arrangements.
PressureUp to 30 bar
Temp–40 to +200°C
SpeedUp to 25 m/s
Shaft10–120 mm
Oil & GasChemicalWater Treatment
API 682 DUAL
FM-200 Series
Double Mechanical Seal
FM-200 Double Cartridge Seal
Pressurised and unpressurised dual seal for hazardous and toxic media. API 682 Plan 53A/53B/53C compatible. Full cartridge design for zero-setting installation.
PressureUp to 40 bar
Temp–60 to +250°C
SpeedUp to 20 m/s
Shaft20–180 mm
Oil & GasPetrochemicalPharmaceutical
PRE-SET CARTRIDGE
FM-200 Series
Cartridge Mechanical Seal
FM-200 Cartridge Mechanical Seal
Pre-set single and dual cartridge seals for fast, error-free installation. Eliminates manual setting. Pusher and non-pusher configurations for a wide range of process duties.
PressureUp to 35 bar
Temp–40 to +220°C
SpeedUp to 22 m/s
Shaft20–200 mm
ChemicalWaterPower Generation
API 682 CAT 1/2/3
FM-API Series
API 682 Process Seal
FM-API 682 Process Seal
Designed to full API 682 4th Edition. Category 1, 2 and 3 duties. Dry-running capable SiC faces for severe refinery and petrochemical service. Full documentation supplied.
StandardAPI 682 Cat.1/2/3
Temp–60 to +400°C
PressureUp to 50 bar
Shaft25–200 mm
RefineryPetrochemicalOil & Gas
NO DISASSEMBLY
FM-SP Series
Split Mechanical Seal
FM-SP Split Mechanical Seal
On-site installation without pump or shaft disassembly. Ideal for large shaft diameters, difficult access, or where downtime must be minimised. Elastomer and PTFE secondary options.
PressureUp to 12 bar
Temp–20 to +150°C
SpeedUp to 12 m/s
Shaft50–350 mm
WaterMiningGeneral Industry
API 692 NON-CONTACT
FM-DGS Series
Dry Gas Seal
FM-DGS Dry Gas Seal
Non-contacting dry gas seal for centrifugal compressors and high-speed rotating equipment. Spiral groove geometry, inert gas injection. Tandem and double configurations to API 692.
PressureUp to 300 bar
Temp–60 to +250°C
SpeedUp to 150 m/s
Shaft50–400 mm
Oil & GasCompressionLNG
TOP / BOTTOM ENTRY
FM-MX Series
Mixer & Agitator Seal
FM-MX Mixer & Agitator Seal
Top-entry, bottom-entry and side-entry mixer and agitator seals for reactors, vessels and mixing equipment. Handles high radial run-out, shaft deflection and pressure/vacuum cycling.
PressureVacuum to 20 bar
Temp–40 to +200°C
SpeedUp to 8 m/s
Shaft30–300 mm
ChemicalPharmaceuticalFood & Beverage
ALL-METAL / CRYOGENIC
FM-300 Series
Metal Bellows Seal
FM-300 Metal Bellows Seal
Welded metal bellows seal for high-temperature, cryogenic and corrosive duties. No dynamic elastomer, no springs, all-metal design. Inconel, Hastelloy C276 and 316L options.
PressureUp to 40 bar
Temp–200 to +400°C
SpeedUp to 20 m/s
Shaft15–150 mm
PetrochemicalCryogenicHigh Temperature
HARD FACE / MINING
FM-SL Series
Slurry & Abrasive Seal
FM-SL Slurry Mechanical Seal
Tungsten carbide/silicon carbide face combinations, hardened insert, SpiralTrac throat bushing. Designed for abrasive and slurry-laden media in mining and mineral processing.
PressureUp to 20 bar
Temp–10 to +120°C
SolidsUp to 40%
Shaft25–200 mm
MiningMineralsWater Treatment
UP TO +450°C
FM-HT Series
High Temperature Seal
FM-HT High Temperature Seal
Metal bellows or spring-loaded designs for heat transfer fluid, thermal oil, hot water and steam services. All-metal construction with ceramic face grades for thermal shock resistance.
PressureUp to 30 bar
TempUp to +450°C
SpeedUp to 20 m/s
Shaft20–150 mm
Power GenerationThermal OilSteam
DIRECT FIT
FM-OEM Series
OEM Replacement Seal
FM OEM Replacement Seals
Direct-fit replacement seals for John Crane, EagleBurgmann, Flowserve, AESSEAL, Roten and Vulcan frames. Equivalent or enhanced material grades. 3–10 working day standard delivery.
Compat.All major OEMs
Delivery3–10 days
MOQ1 unit
UrgentSame-day avail.
All IndustriesMROMaintenance
ALL API 682 PLANS
FM-SUP Series
Seal Support Systems
Seal Support Systems
Plan 11, 13, 21, 23, 52, 53A, 53B, 53C, 54 and 62 seal support systems to API 682. Reservoir units, heat exchangers, cyclone separators, instrumentation and control panels.
PlansAll API 682
PressureUp to 100 bar N₂
Temp–20 to +200°C
DesignCustom skids
Oil & GasRefineryPetrochemical
REVERSE ENGINEERED
FM-CUS Series
Custom Engineered Seal
Custom Engineered Sealing
Full reverse engineering capability for obsolete, unusual or non-standard configurations. On-site measurement, 3D scanning, material analysis and manufacture from single unit.
Shaft10–600 mm
Lead Time48h–4 weeks
StandardsAPI/DIN/ISO
ServiceOn-site avail.
All SectorsOEMLegacy Equipment
NON-CONTACTING
FM-BRG Series
Bearing Protection
Bearing Isolators & Protection
Non-contacting compound labyrinth bearing isolators for motors, gearboxes, fans and pumps. Excludes moisture, dust and contaminants. Bronze, stainless and engineered polymer.
Shaft10–400 mm
SpeedUp to 40 m/s
IP RatingIP65–IP66
TypeCompound labyrinth
MotorsGearboxesGeneral Industry
OEM Replacement Programme
OEM Replacement
OEM Replacement
Mechanical Seals
FlowMach engineers and manufactures direct-fit replacement mechanical seals compatible with all major industrial seal OEM frame sizes and configurations. We supply equivalent industrial performance and full engineering support — without copying any OEM branding.
Our reverse-engineering capability allows us to reproduce obsolete, discontinued or non-standard seal configurations from failed samples, drawings or physical measurements.
John Crane
EagleBurgmann
Flowserve
AESSEAL
Roten
Vulcan
Chesterton
Lidering
Direct-fit frame compatibility
All major OEM seal frame sizes and chamber configurations — no machining required.
Equivalent or enhanced material grades
Face materials, elastomers and metals matched or upgraded to improve performance.
3–10 working days standard delivery
Urgent and emergency overnight supply available on request for plant critical situations.
Full engineering support included
Failure analysis, material recommendation and installation guidance supplied with every order.
Technical Capabilities
Engineering Specifications
⚙️
API 682 4th Ed.
Category 1, 2 and 3 fully compliant seal designs
📐
DIN 24960
European standard mechanical seal dimensions
🔩
ISO 21049
International pump seal standard compliance
🌡️
+450°C Rating
High-temperature metal bellows designs
❄️
–200°C Cryo
Cryogenic low-temperature seal capability
⬆️
300 bar Pressure
Dry gas seal operating capability
⚡
150 m/s Speed
High-speed dry gas seal design
🏭
600 mm Shaft
Maximum shaft diameter capability
🧪
pH 0–14
Full chemical compatibility range
🔄
24h Emergency
Emergency breakdown manufacturing
📊
3D Reverse Eng.
Laser scanning and 3D modelling service
✅
Zero Leakage
SIL-rated seals for fugitive emission control
Custom Engineered Solutions
Custom Engineered
Custom Engineered
Sealing Solutions
When standard seals are not sufficient — we engineer the solution. From reverse engineering obsolete seals to designing new configurations for extreme process conditions.
01
Reverse Engineering
Reproduce obsolete or non-standard seals from failed samples, OEM drawings or physical measurements. Full dimensional inspection and material analysis included.
02
OEM Replacement
Direct-fit replacements for all major OEM seal frames without OEM branding. Equivalent or superior materials. No minimum order quantity.
03
High Temperature Design
Metal bellows, ceramic face and graphite packing seal systems for thermal oil, steam and high-temperature process duties up to +450°C.
04
Abrasive Media Engineering
Hard-face seal systems with SpiralTrac throat bushings, tungsten carbide/silicon carbide faces and flush system design for slurry and abrasive duties.
05
Chemical Compatibility
Full wetted-material selection for pH 0–14, highly oxidising and reducing services. PTFE, Hastelloy, ceramic and exotic alloy options.
06
Special Alloy Seals
Inconel 625, Hastelloy C276, duplex 2205, super duplex 2507, titanium and tantalum for extreme corrosion resistance in petrochemical and chemical duty.
07
Emergency Manufacture
Breakdown seal manufacture within 24–48 hours for critical plant shutdown situations. On-site measurement and same-day dispatch available.
08
On-Site Engineering
Resident engineering support, seal audits, installation supervision, failure investigation and reliability improvement programmes.
Industries Served
12 Industrial Sectors
FlowMach mechanical seals are engineered and supplied across every major process and manufacturing sector.
🛢️
Oil & Gas
⚗️
Petrochemical
🧪
Chemical
⚓
Marine
💧
Water Treatment
⚡
Power Generation
💊
Pharmaceutical
🍎
Food Processing
⛏️
Mining
♻️
Energy
🏗️
Steel Industry
🏭
Industrial Mfg.
Engineering Consultation Available
Ready to Engineer Your Sealing Solution?
Submit your pump data, seal chamber drawings and failure details. Our sealing engineers will select the optimum FlowMach seal for your specific application and operating conditions.
Upload pump data
Upload seal drawings
Upload failure photos
Request CAD drawings
Emergency seal supply