Lip Seals

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Lip Seals

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U/UM

UM are the strongest kind of moulded lip seals with a hardness of 90° ShA. They can be assembled both on pistons and cylinders and withstand pressure up to 120bar/cm2. U seals are the same as UM, but their sizes are in inches.

 

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M

Same structure as the UM type, but different in sizes and in the negative cut of the lips. They are produced in 85° ShA.

 

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DE/DEM

They are produced with a hardness of 75° ShA for easier assembling. These seals are made for dynamic external sealing on only one lip. They withstand a pressure of up to 80 bar.
DE seals are used on pistons with inch dimensions and have lips with sharp cut edges; DEM seals are used on pistons with metric dimensions and have lips with tapered negative cut.

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DI/DIM

They are produced with a hardness of 90° ShA and made for dynamic internal sealing on only one lip. The external lip is higher and stronger than the internal one and they are suitable for operating pressure up to 120 bar.
DI seals are used on rods with inch dimensions and have lips with sharp cut edges; DIM seals are used on rods with metric dimensions and have lips with tapered negative cut.

 

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H

They are made with a hardness of 90° ShA and withstand a working pressure of 40 bar. They are used on cylinders as oil control rings or dust covers and must be axially pressed in the seat with a ring.

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C

They are made with a hardness of 90° ShA and withstand a working pressure not exceeding 40 bar. They are known as caps and are installed on pistons as rod wipers.