Loctite gasketing sealants and compounds loctite 135325 loctite 510 is a highly temperature resistant anaerobic sealant that cures when confined in the absence of air ie between close fitting metal surfaces typical applications include sealing rigid flange faces on transmissions and engine casings loctite 510 ensures an instant low pressure seal and increases the torque capacity of assembled flanges loctite 135325 510 gasketing product 300ml