[ChrisBennet]

Here is a discription of Curil-T and Curil-K2 I found on a VW Bus site:

Engine Sealing Products
The importance of using the proper sealing compounds when assembling your engine requires using the original compounds where ever possible. To this end, we carry Elring-Curil Products for the air and water cooled Engines.

Curil T is a Non-Hardening, Temperature Resistant Sealing Compound and forms an excellent seal where abnormally high internal pressures exist even at extreme temperatures. It is particularly suitable for sealing against mineral oils, synthetic oils, greases, diesel and motor fuels, alcoholic solvents, gases, air, water and seawater. For applications, Curil T has a synthetic base which is ideally suited for sealing combustion engines, turbo blower exhausts, turbines, generators, gearboxes, pumps and other power units as well as screwthread connections of all kinds. This is especially appropriate for sealing the square Wasserboxer Cylinder Head Seal to the Crankcase. Temperature Range of Curil T is approximately -40c to approximately +250c.

ZVC-10002 Curil T 75ml Tube $xx.xx


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Curil K2 is a Non-Hardening Sealing Compound which can be applied with an excellent sealing effect on assemblies which require minimum torque loss and where high surface adhesion is required. Components with groove surfaces can be sealed efficiently and will remain functional under conditions of mechanical, chemical and thermal stress. The components can be easily dismantled. Curil K2 can be applied with a brush with the optional hand-pump that screws to the tin can it comes in. It insures great effectiveness in the sealing of internal combustion engines, gearboxes, pumps and other power units and particularly at disconnecting points such as cylinder head base gaskets, gearhousing gaskets and screwthread connections of all kinds. This is especially appropriate for engine crankcase halves, cylinder base, alternator/generator tower and fuel pump mounting base. Also for the Cylinder Head Nuts on the Wasserboxer where they have to be sealed when torqued on. Temperature Range of Curil K2 is approximately -40c to approximately +200c.

Gotta love a sealant that is bright green...
-Chris