Material selection in hammer union seals is crucial for ensuring long-term resistance to a variety of chemicals, including acids, bases, hydrocarbons, and sour gas components. NBR (nitrile) is often chosen for general service, while Viton (FKM) accommodates higher temperatures and chemical exposure, and HNBR targets sour gas applications. PTFE versions are preferred where aggressive c... https://globalsealstech.com/product/hammer-union-seal-2/