Polymer springs into action

Jan. 24, 2008
Energy absorbing springs used in seal and backup rings for the oil and gas industry were historically made from ferrous metals. Problem is, over time the metals not only corrode but also score the backup ring shaft as the seal wears away.

A new line of non-metallic PEEK polymer energy absorbing springs from Clifford Spring Co. in England overcomes these problems. Victrex PEEK polymer from Victrex USA Inc. is strong and stands up to aggressive chemicals, solvents, and lubricants. It is also not abrasive enough to score the backup ring shafts. PEEK is light in weight, has a coefficient of thermal expansion similar to that of the seal material, and can be manufactured as a totally encapsulated item — this prevents the seal from lipping out and prolongs seal life.

The polymer can also be used for Garter springs added as a secondary operation, following molding or machining of the seal. PEEK Garter springs can be color-coded for instant identification and assurance that the correct energy absorber is fitted to the seal. Energy absorbers made from PEEK are available with outside diameters of 1.4 up to 10 mm (0.05 to 0.394 in). The maximum single length that can be produced is 2.4 m (7.9 ft). This equates to a spring diameter of approximately 75 cm (2.5 ft). Multiple springs can be joined end to end to give a larger spring diameter.

More Information:
Clifford Spring Co.
Victrex USA Inc.

Sponsored Recommendations

NEW Low Profile, Ultra Compact Power Supplies

March 13, 2024
Learn more HERE about Altech's Power supplies!

Altech's Liquid Tight Strain Relifs Catalog

March 13, 2024
With experienced Product Engineers and Customer Service personnel, Altech provides solutions to your most pressing application challenges. All with one thought in mind - to ensure...

Industrial Straight-Through Cable Gland

March 13, 2024
Learn more about Altech's cable glands and all they have to offer for your needs!

All-In-One DC-UPS Power Solutions

March 13, 2024
Introducing the All-In-One DC-UPS, a versatile solution combining multiple functionalities in a single device. Serving as a power supply, battery charger, battery care module,...

Voice your opinion!

To join the conversation, and become an exclusive member of Machine Design, create an account today!