Permatex ultra black oil resistant silicone gasket maker.

On Syncros, we use this sealant for the decoupler, the bell housing gasket and if you are so inclined, the bell housing to engine case surfaces.

The bell housing to the engine case surfaces came from Volkswagen sealed with silicone and unless you are planning to do some deep river crossings it may not be necessary to seal this.

Ref ID: 82180