It is a spring made with the super metal alloy Hastelloy®, a registered trademark of the Haynes International Inc. company who created this and many other high performance, corrosion resistant alloys. The spring is made from stainless steel, along with other alloys, and is designed to endure high temperatures, high stress, and severe corrosion applications.

Chlorinated polyvinyl chloride (CPVC) is high-heat resistant and can be used in temperatures exceeding 104°. It is an extremely durable material that is also highly resistant to corrosive water environments.