Knowledge Base
NH O-RING Academy
Decades of experience in clear, easy-to-understand technical articles: from materials and design to causes of failure. Free, first-hand knowledge about O-rings.
Technical Articles
FAQ
10 questions: O-ring data sheets
We'll answer your 10 most important questions about O-ring data sheets, FAQs, and more…
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FAQ
10 questions: O-ring grooves
We'll answer your 10 most important questions about O-ring grooves—Questions + Answers…
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FAQ
10 questions: O-ring bearing
We'll answer your 10 most important questions about O-ring storage—Questions + Answers…
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FAQ
10 questions: O-ring production
We'll answer your 10 most important questions about O-ring manufacturing +…
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FAQ
10 questions: O-ring resistance
We'll answer your 10 most important questions about O-ring resistance and more…
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Interpretation
FEP (fluoroethylene propylene)
Here you'll find everything you need to know about FEP as a material—manufacturing…
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Interpretation
Piston seal
Here you'll find everything you need to know about piston seals: definition, types…
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Materials
CR (Neoprene)
Here you'll find everything you need to know about CR (neoprene)—manufacturing, pros, and…
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Materials
PU (polyurethane)
Here you'll find everything you need to know about PU (polyurethane) manufacturing…
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Materials
EPDM (elastomer)
Here you'll find everything you need to know about EPDM: manufacturing, applications, advantages, and…
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Materials
RoHS Directive
Everything You Need to Know About the RoHS Directive: Definition, Contents, Chemicals, Latest…
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Materials
REACH Regulation
Here you'll find everything you need to know about the REACH Regulation. Background, Contents…
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Interpretation
Shore Hardness
Here you'll find everything you need to know about the Shore hardness scale. Definition…
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Materials
elastomer
Here you'll find everything you need to know about elastomers: definition, properties…
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Materials
Thermoplastic elastomer
Here you'll find everything you need to know about thermoplastic elastomers: Properties…
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Interpretation
Elongation at break
Here you'll find all the important information on the topic of elongation at break—definition, measurement…
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Interpretation
Tensile strength
Discover the basics of tensile strength in our comprehensive article, "Basics..."
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Materials
PFAS in the Spotlight
What are PFAS? Where are they found? Where are exposure levels highest? How are PFAS…
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O-rings
O-Ring Guide
Here you'll find everything you need to know about O-rings: Applications, Resistance…
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O-rings
SILICONE O-RINGS
Here you'll find everything you need to know about silicone O-rings: Applications…
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O-rings
PTFE O-RINGS
Here you'll find everything you need to know about PTFE (Teflon) O-rings: Applications…
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O-rings
Buy O-Rings
Here you'll find everything you need to know about buying O-rings. Applications…
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Interpretation
O-Ring Designations
Here you'll find everything you need to know about O-ring designations and applications…
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O-rings
NBR O-RINGS
Here you'll find everything you need to know about NBR O-rings: Applications, Resistance…
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O-rings
HNBR O-RINGS
Here you'll find everything you need to know about HNBR O-rings: Applications, Resistance…
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O-rings
FVMQ O-RINGS
Here you'll find everything you need to know about FVMQ O-rings: Applications, Resistance…
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O-rings
FKM O-RINGS
Here you'll find everything you need to know about FKM (VITON) O-rings. Applications…
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O-rings
FFKM O-RINGS
Here you'll find everything you need to know about FFKM (ECOLAST®) O-rings. Applications…
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O-rings
FEPM O-RINGS
Here you'll find everything you need to know about FEPM O-rings: Applications, Resistance…
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O-rings
FEP O-RINGS
Here you'll find everything you need to know about FEP-coated O-rings. Applications…
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O-rings
EPDM O-RINGS
Here you'll find everything you need to know about EPDM O-rings: Applications, Resistance…
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O-rings
CR O-RINGS
Here you'll find everything you need to know about CR O-rings: Applications, Resistance…
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O-rings
ACM O-RINGS
Here you'll find everything you need to know about ACM O-rings: Applications, Resistance…
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Interpretation
Measuring O-Rings
Here you'll find everything you need to know about measuring O-rings: material, Shore hardness…
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Interpretation
O-ring tables
Here you can find out everything about the most important O-ring tables: ISO 3601, AS 568, BS 1806, BS…
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Interpretation
O-Ring Installation
Here you'll find everything you need to know about O-ring installation. Installation tools Max.…
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Interpretation
O-ring ISO 3601
Here you'll find everything you need to know about the ISO 3601 standard: Tolerances…
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Interpretation
O-ring DIN 3771
Here you'll find everything you need to know about the DIN 3771 O-ring standard. O-ring…
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Interpretation
O-Ring Compatibility List
Here you'll find everything you need to know about O-ring compatibility charts…
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Interpretation
O-Ring Applications
Here you'll find everything you need to know about O-ring applications…
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Materials
FDA Approval
Check out our article on FDA approval, country of origin, guidelines, and testing procedures…
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Causes of damage
O-Ring Quality Control
Here you'll learn what optimal quality control for O-rings looks like—dimensions…
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Causes of damage
Heat Damage to O-Rings
Find out here how to prevent heat damage to O-rings: Causes, signs of damage…
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Causes of damage
O-Ring Wear
Find out here how you can minimize wear on O-rings: Causes, signs of damage…
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Causes of damage
O-ring deformation
Find out here how you can reduce permanent deformation in O-rings…
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Interpretation
O-Ring Pressure Applications
Here you'll learn how to optimally design O-rings for use under pressure: material selection, Shore hardness…
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Causes of damage
O-Ring Swelling
Here you'll learn how to protect your O-rings from the effects of process media. Material selection…
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O-rings
O-Ring Supplier
Here you'll learn what makes a good O-ring supplier: selection, quality, delivery time…
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Causes of damage
O-Ring Slot Extrusion
Find out here how you can prevent gap extrusion in O-rings. Causes…
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Materials
O-Ring Shore Hardness
Here you'll find everything you need to know about the Shore hardness of O-rings…
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Materials
O-Ring Bearing
Here you can learn about the best way to store O-rings and their shelf life according to DIN 7715…
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Interpretation
O-rings hot water
Here you can find out which O-ring material you should use with hot water or steam…
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Interpretation
O-Ring Coatings
Here you can find out what types of O-ring coatings are available: PTFE coating…
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O-rings
General Information About O-Rings
Here you'll find everything you need to know about O-rings: materials, dimensions…
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Causes of damage
Causes of O-Ring Damage
What are the causes of damage to O-rings, and how can they be prevented? Heat, chemicals…
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O-rings
O-Ring Manufacturing
Here you can learn about the various methods used to manufacture O-rings: compression molding…
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Interpretation
O-ring grooves
Basics of O-Ring Groove Design: Rectangle, Trapezoid, and Triangle.
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Interpretation
O-Ring Design
Make sure the wire gauge, groove, and material are properly matched.
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