Hernon EF Primer 49 is a single component, non-CFC solvent designed to promote the cure speed of Hernon anaerobic adhesives and sealants. EF Primer 49 is especially recommended for applications with passive metals or inert surfaces and with large bond gaps or for cure conditions below 15ºC. EF Primer 49 meets the requirements of MIL-S-22473E (Grade T), and ASTM D5363 (Grade T).