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Seal Design Guide
Introduction
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O-Ring Basics
Seal Types & Gland Design
Environmental Factors
Material Selection Guide
Elastomer Applications
Troubleshooting
Sizes & How to Order
Glossary of Terms
Technical Summary
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1. Introduction
Mission Statement
Welcome Letter
Where to Start
The O-Ring Example
Rules of Thumb
About the Seal Glossary
How This Guide Works
Beyond This Guide
Acknowledgments
Feedback Please
Cautionary Note
2. Products & Services
Products
Custom Products
Design Engineering
Research & Development
Customer Service
Comprehensive Manufacturing
Prototyping
ISO 9001 Registration
AS9100B
Quality Assurance & Testing
3. O-Ring Basics
Seal Thinking
Definition
Why an O-Ring Works
Dimensional Considerations
Material Considerations
Chemical Attack
Temperature
Friction
Pressure
Durometer
Summary
Cautionary Note
Illustrations & Formulas
4. Seal Types & Gland Design
Major Classification
Static Seal Types
Dynamic Seal Types
Machining
Surface Finishes
O-Ring Installation
Cautionary Note
Illustrations & Tables
5. Environmental Factors
Chemical Compatibility
The Effects of Pressure
Seal Compression (Squeeze)
The Effects of Friction
Methods Used to Control Friction
The Effects of Temperature
Tolerance Stack-Up
Illustrations & Formulas
6. Material Selection Guide
Basic Concepts of Rubber
Aflas
Buna-N
Butyl
Chemraz
®
Epichlorohydrin
Ethylene-Propylene
Fluorocarbon (Viton)
Fluorosilicone
Natural Rubber
Neoprene
®
(Chloroprene)
Nitrile (Buna-N)
Hydrogenated Nitrile
Perfluoroelastomer
®
Polyacrylate
Polyurethane, Cast
Polyurethane, Millable
Silicone
Liquid Silicone Rubber
Medical Grade Silicone
Styrene Butadiene
Teflon
®
Virgin
Vamac
®
[Ethylene / Acrylic]
Thermoplastic Elastomers
Cautionary Note
Tables
7. Special Elastomer Applications
Friction
Rotary Application
Extreme High Temperature
Low Temperature Situations
Abrasion Resistance
FDA Food Applications
Medical Applications
NSF Applications
Under. Lab. Recognized Comp.
Water and Steam Sterilization
Gamma Sterilization
ETO Sterilization
Automotive Fuels
Brake Fluid Applications
Contact with Plastic Surfaces
Low Permeability
Vacuum Situations
Outgassing
Compression Set Resistance
Drive Belt Applications
Age Control/Shelf Life
Compound Colorization
Automatic Assembly
EMI Shielding
Conc. Acids at Elevated Temp.
O-Ring Lubricant Guide
8. Troubleshooting
Common Reasons
Compression Set
Extrusion & Nibbling
Abrasion
Heat Hardening & Oxidation
Installation Damage
Plasticizer Extraction
Excessive Swell
Spiral Failure
Weather or Ozone Cracking
Failure Without Evidence
Explosive Decompression
Other Problems
Illustrations & Formulas
9. Sizes & How to Order
How to Order Apple O-Rings
Shrinkage Size Adjustment
How to Order Custom Parts
Tolerances for Custom Molded Parts
Straight Thread Tube Fitting Bosses
Tables
10. Glossary of Terms
A
B
C
D
E
F
G
H
I
L
M
N
O
P
Q
R
S
T
U
V
W
11. Technical Summary
Rules of Thumb Summary
Formulas
Seal Glossary
12. Bibliography & Trademarks
Books & References
Articles
Trademarks
Other
Q
A
B
C
D
E
F
G
H
I
L
M
N
O
P
Q
R
S
T
U
V
W
QS 9000
Quality System model, used in conjunction with the ISO 9000 standard, for the automotive industry.
O-Ring Gland Calculator
O-Ring Size Search
Material Selection Guide
Chemical Compatibility Guide
Seal Design Guide
Engineering Request
Sample Request
Request for Quote
AS568 Standard Size List
O-Ring Seal Sizes
Standard O-Rings
BOSS GASKETS
Chemical Capabilities
General Properties
Military Specifications
Gland Design
Downloads
Glossary of Terms
Print Version PDF (255K)
Seal Design Guide
Print Version PDF (34.6MB)
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