Large pump action black silicone sealant
Use for sealing sump, water pump, timing cover, thermostat housings inlet end seals etc etc
Permanent gasket and the best bit is the applicator is resealable so no need to open up a new tube of sealant.
As used in our workshops - gives neat professional finish every time.
Elring Dirko state a Minimum 12 month shelf life if unopened so handy to carry with you in case of emergency gasket repair.