Viton is a premium seal material that has a higher heat resistance and better chemical resistance compared to Neoprene. Neoprene seals have a chance of lightly melting on first engine startup which can lead to leaks later on. The higher heat tolerance of Viton can avoid this issue.

Installation of these modern seals is much easier than the old style rope type seals, ensuring a positive seal every time. All of our rear main seals are No Trim, Direct Fit, while other suppliers offer a more difficult to use Trim-to-Fit seal. The use of Viton seals will also free horsepower because the drag on the crank is only a fraction of that compared to rope seals.