LOCTITE® 5800 seals close-fitting joints between rigid metal faces and flanges. It cures when confined in the absence of air between close-fitting metal surfaces. Used as a form-in-place gasket on rigid flanged connections. Provides resistance to low pressures immediately after assembly. It carries no hazard symbols, risk or safety phrases and does not contain any declarable carcinogens, mutagens or reproductive toxins.General purpose liquid flange sealant for close-fitting joints between rigid metal faces and flanges.No hazard symbols, no risk phrases & no safety phrasesExcellent chemical and temperature resistance of cured productInstant low-pressure sealExcellent oil resistance and water / glycol resistanceFor machined, rigid flanges