Description Description The Haskel 28628 spring is a machine part that is used in various Haskel products, such as check valves and pumps. The spring is made of durable metal and has a factory warranty that may not apply in some cases. The spring can withstand high pressure and temperature and is designed to ensure optimal performance and reliability of the Haskel products. State of California Proposition 65 WARNINGCancer and Reproductive Harm - www.P65Warnings.ca.gov. Literature & Docs Accessories