ESA Knowledge base

Technical library

 The ESA Knowledge base brings together technical articles, guidance, and reference materials for the sealing industry. 

The table below is searchable and filterable by sealing device and technical category, helping you quickly find the content most relevant to your interest. 

Subject
2026 April – Valve World – Strengthen your sealing expertise with the European Sealing Association
General
Applications
2026 February – Valve World – The impact of artificial intelligence on valve sealing technology
General
Standards
2025 December – Valve World – Food contact regulations in the EU and their implications
Flange Gaskets
Standards
2025 October – Valve World – Performance evaluation of elastomeric seals at low-temperature conditions
Elastomeric & Polymeric Seals
Applications
2025 August – Valve World – Valve packing sets vs packing lengths for fugitive emission applications
Packings
Installation
2025 June – Valve World – PFAS legislation and its impact on fluoropolymer materials for sealing devices
General
Standards
2025 April – Valve World – Concerns surrounding PFAS
General
Standards
2025 April – Valve World – R&R gasket material: a way to innovation and sustainable manufacturing
Flange Gaskets
Applications
2025 February – Valve World – Fiber-based gasket materials for hydrogen applications
Flange Gaskets
Applications
01 2025 – Flow Magazine – The Role of Carbon-Graphite and Silicon Carbide Seal Ring Wear Faces in the Energy Transition and Efficiency of Pumping Equipment
Mechanical Seals
Applications
2024 December – World Pumps – Expense control for mechanical seals
Mechanical Seals
Applications
2024 November – World Pumps – How diamond coated mechanical seals can help prevent equipment breakdowns
Mechanical Seals
Applications
2024 September – Valve World – Sealability of PTFE gaskets in cryogenic and gaseous hydrogen environments
Flange Gaskets
Applications
2024 August – Valve World – Techniques for reliable bolt loading in flange connections
Flange Gaskets
Installation
2024 May – Valve World – Changes in PTFE gasketing materials under cryogenic and gaseous hydrogen environments
Flange Gaskets
Applications
2024 April – Valve World – Why flange joint failures happen and how to avoid them
Flange Gaskets
Installation
2024 February – Valve World – Comparison of emission tests with helium and hydrogen for graphite gaskets
Flange Gaskets
Applications
2023 December – Valve World – Elastomer guideline transfer to KTW-BWGL
Flange Gaskets
Standards
2023 December – Hose+Coupling World – Design of Non-Metallic Expansion Joints for Low Temperature Applications
Expansion Joints
Applications
2023 October – Valve World – ESA Gasket Database and Characteristics
Flange Gaskets
Theory/Calculation
2023 August – Valve World – Arrhenius seal life prediction project: results and analysis
Elastomeric & Polymeric Seals
Materials
2023 June – Valve World – REACH PFAS restriction process and the effects on the Valve and Sealing Industry
General
Materials
2023 June – Hose+Coupling World – Optimal Designs for Fabric Expansion Joints
Expansion Joints
Design/Construction
2023 April – Valve World – Gasket sealability test results in line with new Air Quality Control act
Flange Gaskets
Standards
2023 February – Valve World – Can optimal seating stress improve valve packing performance?
Packings
Installation
2022 December – Valve World – Flange Isolation kit
Flange Gaskets
Installation
2022 October – Valve World – A valuable resource for sealing information
General
Training
2022 August – Valve World – Valve packing optimization
Packings
Theory/Calculation
2022 August – Hose+Coupling World – The Benefit of Flexible and Hygienic Expansion Joints
Expansion Joints
Applications
2022 April – Pump Engineer – Cavitation in Centrifugal and Axial-Flow Pumps
Mechanical Seals
Installation
2022 June – Valve World – A brief history of ASME m and y factors
Flange Gaskets
Theory/Calculation
2022 May – Valve World – Sealing devices and the need for PFAS
Elastomeric & Polymeric Seals
Materials
2022 April – Valve World – Cleaning of components for oxygen service
Flange Gaskets
Materials
2022 February – Valve World – Corrosion and corrosion protection for flange connections in pipelines
Flange Gaskets
Installation
2021 October – Valve World – Right gland load crucial for fugitive emission sealing
Packings
Installation
2021 August – Valve World – Developments in valve stem sealing technology
Packings
Applications
2021 August – Valve World – Industrial valves and fugitive emissions: new perspectives
Packings
Standards
2021 August – Valve World – Corrosion inhibitors in graphite packing
Packings
Materials
2021 June – Valve World – Reduction of fugitive emissions: the new TA-Luft
Packings
Standards
2021 June – Valve World – Metal-to-metal contact GEM gaskets for nuclear applications
Flange Gaskets
Applications
2021 April – Valve World – Current standards for fire testing of flange gaskets and stem packing
Packings
Standards
2021 February – Valve World – Common assembly methods for bolted flange joints: an overview
Flange Gaskets
Installation
2020 December – Valve World – Compression packings: from natural fibers to hybrid composites
Packings
Materials
2020 September – Valve World – Bolting of flange joints - Part 2
Flange Gaskets
Theory/Calculation
2020 August – Valve World – Bolting of flange joints - Part 1
Flange Gaskets
Theory/Calculation
2020 June – Valve World – Factors for successful emissions reduction
Packings
Applications
2020 March – Valve World – Valve packing friction: the hidden factor for an improved plant performance
Packings
Applications
2019 December – Valve World – “100 per cent tightness an illusion”
Flange Gaskets
Applications
2019 June – Valve World – Valve stem packing: optimum performance through correct installation
Packings
Installation
2018 November - Valve World - “An experimental determination of the gasket-flange surface friction factor, µG"
General
Theory/Calculation
PUMP ENGINEER August 2018 – Failures of Mechanical Seals: Part 2
Mechanical Seals
Troubleshooting
2018 May – Valve World – Qualifying quarter-turn valves for low emissions
Packings
Applications
2018 March – Valve World Publications – “The bolted connection – seal failure analysis and corrective action"
Flange Gaskets
Troubleshooting
2018 February – Valve World Publications – “Understanding and preventing causes of down time”
General
Troubleshooting
2017 November – Valve World Publications – “Choosing between the various types of gasket materials”
Flange Gaskets
Materials
2017 September – Valve World Publications – “Graphite packing rings”
Packings
Materials
2017 July – Valve World Publications – “The recommended handling and appropriate packaging for flange gaskets”
Flange Gaskets
Training
2017 May – Valve World Publications – “Gasket factors derived from EN 13555 for use with EN 1591”
Flange Gaskets
Theory/Calculation
2017 March – Valve World Publications – “Oxygen – Component of the air that we breathe and a dangerous substance”
General
Applications
2016 November – “VDI2290 – Resulting consequences for users and manufacturers of static gaskets”
Flange Gaskets
Standards
2016 September – “Durability of expanded graphite in high temperature applications”
Flange Gaskets
Materials
2016 July- “Fugitive emission packings – friction and its effects”
Packings
Applications
2016 May – “Primary flange forces – Part 2”
Flange Gaskets
Theory/Calculation
2016 May – “Primary flange forces – Part 1”
Flange Gaskets
Theory/Calculation
2015 November – “Optimising stem seal performance in valves by means of surface coating”
Packings
Applications
2015 September – “Valve packing characterisation and design”
Packings
Design/Construction
2015 July – “How should I store my gasket?”
Flange Gaskets
Training
2015 May – “Gasket compression and recovery”
Flange Gaskets
Theory/Calculation
2015 March – “Emission standards for valve packings”
Packings
Standards
2014 November – “What gasket thickness should I use in my flange system?”
Flange Gaskets
Design/Construction
2014 June – “What are the considerations for the proper torque of a valve packing gland?”
Packings
Design/Construction
2014 April – “Effect of temperature on bolted flange assemblies”
Flange Gaskets
Training
2014 January – “How do I prevent galvanic corrosion in my packing gland?”
Packings
Training
2013 September – “What are the key steps to cutting compression packings for optimum performance?”
Packings
Training
2013 June – “What is the impact of flange finish on gasket performance?”
Flange Gaskets
Training
2013 April – “Carbon and Graphite Packings.”
Packings
Materials
2013 January – “Tightness in Gasketed Flanged Joints III ; new European standards.”
Flange Gaskets
Standards
2012 November – “Tightness in Gasketed Flanged Joints II ; Standards for calculation and testing; early attempts in the USA and Germany.”
Flange Gaskets
Standards
2012 September – “Tightness in Gasketed Flanged Joints I ; Background and challenges.”
Flange Gaskets
Theory/Calculation
2012 June – “Determination of bolt torque for flanged connections.”
Flange Gaskets
Theory/Calculation
2012 April – “What is the impact of packing friction on valve performance?”
Packings
Applications
2012 January – “An introduction to gasket selection and installation.”
Flange Gaskets
Installation
2011 November – “Advantages of die-formed packing rings.”
Packings
Materials
2011 September – “What makes a good stuffing box packing?”
Packings
Training
2009 September – “Was it Really the Gasket?”
Flange Gaskets
Troubleshooting
Successful sealing with elastomers
Elastomeric & Polymeric Seals
Training
Engineering Guide (English)
Expansion Joints
Applications
Flexible and hygienic expansion joints for dairy products
Expansion Joints
Applications
Fitters Guide (English)
Expansion Joints
Installation
Engineering Guide (French)
Expansion Joints
Training
Engineering Guide (Spanish)
Expansion Joints
Training
Engineering Guide (Turkish)
Expansion Joints
Training
Fitters Guide (Turkish)
Expansion Joints
Training
Installation Guide (Danish)
Expansion Joints
Training
Installation Guide (Dutch)
Expansion Joints
Training
Installation Guide (English)
Expansion Joints
Training
Installation Guide (German)
Expansion Joints
Training
Installation Guide (Russian)
Expansion Joints
Training
Installation Guide (Turkish)
Expansion Joints
Training
La Sicurezza dei Sistemi di Termini – Parte 1 – Guidelines per la Manutenzione e la Progettazione
Flange Gaskets
Training
Article about ESA in the Pump Engineer Magazine
General
Applications
COMPRESSION PACKING TECHNICAL MANUAL 4TH EDITION
Packings
Design/Construction
ESA Position Statement regarding PFAS
General
Materials
Press Release on the European Parliament Plenary Vote on the Recast of the Drinking Water Directive
General
Standards
PRESS RELEASE ON THE EUROPEAN PARLIAMENT PLENARY VOTE ON THE RECAST OF THE DRINKING WATER DIRECTIVE
General
Standards
Fugitive Emissions Journal
General
Theory/Calculation
Gaskets Selection for the Use in Liquid Chlorine and Dry or Wet Chlorine Gas Service
Flange Gaskets
Applications
Gaskets Handbook – 1st Edition July 2017
Flange Gaskets
Design/Construction
Guía para la utilización segura de elementos de sellado – Juntas y Bridas
Flange Gaskets
Design/Construction
Gasket Installation Procedure Fitter's Flyer
Flange Gaskets
Installation
Guidelines for safe seal usage - Flanges and gaskets
Flange Gaskets
Installation
Standards and Regulations for Flange Gaskets
Flange Gaskets
Standards
Directives concernant une utilisation sûre des joints d’étanchéité – Brides et Joints
Flange Gaskets
Standards
Glossary of Sealing Terms - Part 1 Flanges and Gaskets
Flange Gaskets
Theory/Calculation
UNDERSTANDING AND PREVENTING CAUSES OF DOWN TIME
Flange Gaskets
Training
Wegweiser für eine sichere Dichtverbindung an Flanschen
Flange Gaskets
Training
Wytyczne bezpiecznego stosowania uszczelnień — Kołnierze i uszczelki
Flange Gaskets
Training
IECEx Explosion Protection Procedures for Mechanical Seal Manufacturers (Overview)
Mechanical Seals
Design/Construction
Mechanical Seal Design for Emission Control and User Experience
Mechanical Seals
Design/Construction
Pharmaceutical Guide for Mechanical Seals
Mechanical Seals
Installation
Mechanical Seal Reliability Document
Mechanical Seals
Troubleshooting
Compression Packing Technical Manual 4th Edition
Packings
Design/Construction
Compression Packing Technical Manual 4th Edition (German)
Packings
Design/Construction
Pump and Valve Packing Installation Procedures
Packings
Installation
Specification for a Test Procedure for Packings for Rotary Applications
Packings
Standards
Characterisation of polymer materials in hydrogen
Elastomeric & Polymeric Seals
Applications
DIN Presentation Hydrogen Technologies in German
General
Applications
Plan 53B Information Bulletin
General
Applications
AN EXPERIMENTAL DETERMINATION OF THE GASKET-FLANGE SURFACE FRICTION FACTOR, ΜG
Flange Gaskets
Design/Construction
THE BOLTED CONNECTION – SEAL FAILURE ANALYSIS AND CORRECTIVE ACTION
Flange Gaskets
Design/Construction
List of Test Institutes for PFOA Testing
General
Materials
Standards and Regulations for Elastomeric & Polymeric Seals
Elastomeric & Polymeric Seals
Standards
Standards and Regulations for Mechanical Seals
Mechanical Seals
Standards
Standards and Regulations for Packings
Packings
Standards
Standards, Regulations and Guidelines for Fabric Expansion Joints
Expansion Joints
Standards
Sealing Devices Reduction Of Fugitive Emissions
General
Standards