<http://eclipseseal.com/products/spring-energized-seals/helical-spring-seal/rod/>
<http://schema.org/description>
"Helical Spring Seals are comprised of a wound ribbon metal spring installed in a polymer jacket. Our seals should be used when dynamics are very slow or static."
<http://eclipseseal.com/products/spring-energized-seals/helical-spring-seal/rod/>