Guides and how-tos
Technical Resources
Our technical resources help you measure, identify and select seals and gaskets with more confidence. They are practical, general guides that explain what to measure, what information to collect and where the limits of general advice lie. For anything critical, send us your details for technical review.
- 10 guides
- Measuring
- Materials
- Maintenance
Measuring and identifying
- How to measure an O-ring: ID, cross-section and groove checks.
- How to identify a mechanical seal: pump data, type, dimensions and duty.
- How to measure a hydraulic seal: rod, piston and wiper measurements.
- Understanding gasket dimensions and flange details: ID, OD, PCD and flange standards.
Materials
- Gasket material selection guide: fibre, rubber, PTFE, graphite and metallic types.
- NBR, EPDM, FKM and silicone comparison: general strengths and weaknesses.
- PTFE and graphite sealing guide: characteristics, creep and oxidation.
Failure, maintenance and buying
- Common causes of seal failure: causes, symptoms and prevention.
- Pump and seal maintenance guide: inspection, installation and spares.
- Buying seals and gaskets online: procurement checklist: what to prepare before you order.
How to use these guides
The guides give general information and typical behaviour only. They do not replace manufacturer data for your application. For high-risk duties such as oxygen, hydrogen, aerospace, food-contact, pharmaceutical or potable water, technical review and the correct certification documents are needed.
Need help?
Use Find My Seal, upload a drawing, or talk to us. Browse the full product range and technical support details.
Options & specifications
| Guides | 10 technical guides |
|---|---|
| Topics | Measuring, materials, failure, maintenance, buying |
Options, materials and turnaround are confirmed on your written quote.
Frequently asked questions
Are these guides specific to my equipment?
No. They are general. Send your equipment details for specific advice.
Can I download data sheets?
See our downloads page for documents as they become available.
Who do I ask if I am unsure?
Call 011 079 6033, WhatsApp 079 508 0989 or email info@globseals.com.
Explore
How to Measure an O-ringAn O-ring is defined by two dimensions and a material. Get the inside diameter and cross-section right, note…View - How to Identify a Mechanical SealMechanical seals come in many designs, and the part number is often worn off or never visible. This…View
How to Measure a Hydraulic SealHydraulic seals are normally specified by groove dimensions, because the seal must fit a particular housing. This guide…View 
Gasket Material Selection GuideNo single gasket material suits every flange. Choosing well means matching the material to the medium, temperature, pressure,…View - NBR, EPDM, FKM and Silicone ComparisonFour elastomers account for a large share of O-rings and rubber seals: nitrile (NBR), EPDM, fluoroelastomer (FKM) and…View
PTFE and Graphite Sealing GuidePTFE and flexible graphite are two of the most widely used non-elastomer sealing materials. Both resist a wide…View 
Understanding Gasket Dimensions and Flange DetailsA gasket order is only as good as the dimensions behind it. This guide explains the terms used…View - Common Causes of Seal FailureSeals rarely fail without a reason. Looking carefully at how a seal failed usually points to a cause…View
- Pump and Seal Maintenance GuideGood maintenance extends seal life and reduces unplanned stops. This guide offers a general routine for pumps and…View
- Buying Seals and Gaskets Online: Procurement ChecklistSeals and gaskets are small parts that stop big machines, so ordering the wrong one is expensive. This…View
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