3.Clean the seal recess (the square groove where the gasket sits) with a cotton bud.
4.Inspect the gasket all the way round its surface for damage such as cuts tears or contamination. This should be done visually and also by feeling the surface texture between finger and thumb.
5.IF THE GASKET IS DAMAGED OR SUSPECTED OF BEING DAMAGED, DISCARD IT IMMEDIATELY. A spare gasket is supplied with your housing, or a replacement gasket can be obtained from Fantasea. If the gasket is contaminated or suspected of being contaminated, clean it with a cotton cloth that is free of all chemicals or contamination. After cleaning inspect the gasket again.
6.Replace the gasket into the groove; run a finger round the gasket to make sure it is snugly seated in the groove.
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