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HBY Cross Section

Seal Innovations HBY is a two piece single acting buffer seal which consists of one special designed elastomeric sealing element for to evacuate the back pressure and one thermoplastic back-up ring.

This HBY buffer seal is always used in a sealing system in combination with the U-Seal as they are not designed as being the main sealing element. HBY reduces the pressure peaks on itself in order to save the main sealing element with pressure fluctuations.

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