Hydraulic Rubber Moulding is a closed mould process and you apply high pressure on the job. It is best used when you have low to medium production volumes for larger parts where tightest tolerances and flawless finishes are not required. In Hydraulic Rubber Moulding, you place an uncured rubber profile in a heated mould. Then you soften the uncured rubber by the heat and press them forcing the rubber compound to fill the mould cavity. The rubber is thus made to conform to the shape of the mould and then you cure it to produce your finished article.