Hydraulic seals - Stuart seal

Stuff seal is usually composed of a synthetic rubber O-ring and a special rectangular trapezoidal sealing ring filled with polytetrafluoroethylene. Like a grid ring, it can be divided into a hole type Stuff seal and a shaft type Stuff seal. Its sealing function and mechanism are the same as those of a grid ring, but it only has a unidirectional sealing effect.
Self sealing tight hydraulic sealing ring: Lip shaped sealing ring, which has a smaller contact area with the sealing surface and can produce greater compression deformation, achieving better sealing effect. But it is prone to wear and tear, and its sealing effect is significantly reduced after wear. If an O-ring seal is used in combination with it, even if the lips are worn, the synthetic rubber O-ring seal has a large elasticity, which will force the lips of the O-ring seal to tightly adhere to the sealing surface, generate sufficient surface contact stress, and achieve sealing effect. Moreover, the friction resistance is small, and the operation is smooth, It is also easy to assemble and maintain. Therefore, the hydraulic seals widely used in fully automatic hydraulic brick presses, daily ceramic products, static pressure molding machines for discs and discs, as well as medium pressure grouting and high-pressure grouting sanitary ceramic molding machines, are almost all combination seals, such as Grille rings and Stuart rings.