Engineers need critical design information when choosing a seal for a particular valve application. This includes:
- Operating temperature and pressure ranges
- What fluids or gases are being processed
- The environmental conditions
- Whether the seal is static or will be exposed to dynamic motion
- Expected life of the seal
In a recent presentation at the Valve Repair Council’s seminar, Nathan Sowder, business development manager for oil & gas and chemical processing at Parker’s O-Ring Division, explained the basics of elastomeric seal design. Starting out with an overview of the various polymers used in seals, he compared the pros and cons of various reinforcing fillers, plasticizers, process aids and cure systems. A key component of seal performance is the compound that it is made of.