RTS LubeLocker style transmission pan gaskets make paper gaskets and RTV a thing of the past by manufacturing high-quality, aluminum core gaskets with an outer silicone coating. The elastomer beading applied to the gasket face is the key to sealing. This beading provides a dry, leak-free seal, even when exposed to high horsepower or wide temperature extremes. Drag racing, Circle Track, rock climbing, off-road, desert racing-it doesn’t matter, RTS transmission pan gaskets will keep your lube where it belongs.