Operating temperature capabilities vary by seal material with standard nitrile seals functioning from -40°F to 250°F, fluorocarbons from -20°F to 400°F, and FFKM materials from -15°F to 600°F. Low-temperature applications in arctic environments require materials maintaining flexibility preventing brittle failure. High-temperature service in steam, thermal recovery, or geothermal opera... https://globalsealstech.com/product/hammer-union-seal-2/