초록 ▼

An annular seal arrangement for use between part placed one inside the other and able to be moved in relation to each other. The seal arrangement is constituted by a sealing ring, which has a seal housing having a substantially U-like cross section and in the form of a ring. The inner ring is elasti

An annular seal arrangement for use between part placed one inside the other and able to be moved in relation to each other. The seal arrangement is constituted by a sealing ring, which has a seal housing having a substantially U-like cross section and in the form of a ring. The inner ring is elastically resilient while the outer ring functions a sealing element. The invention furthermore provides a valve fitted with such a seal arrangement, a hollow piston able to be used with it and a method for the production thereof.

대표청구항 ▼

An annular seal arrangement for providing a seal between a valve housing and an axially-directable spool-like piston positioned in said valve housing comprising: an annular seal housing having a pair of axially-spaced lateral walls and an intermediate wall, said intermediate wall extending between s

An annular seal arrangement for providing a seal between a valve housing and an axially-directable spool-like piston positioned in said valve housing comprising: an annular seal housing having a pair of axially-spaced lateral walls and an intermediate wall, said intermediate wall extending between said axially-spaced lateral walls so that said seal housing defines a generally U-like ring-receiving recess, said seal housing being formed from at least two ring parts so that said recess may be accessed when said housing is unassembled, at least one of said ring parts having a dish-like shape such that it forms at least a portion of one of said lateral walls, said ring parts being press-fit into one another to form said seal housing; an annular elastically-resilient inner ring positioned in said ring-receiving recess adjacent to said intermediate wall; an annular outer seal ring positioned in said ring-receiving recess and situated radially inwards from said inner ring; and means for retaining said rings in said seal housing to form an integral unit being capable of being handled without external holding means.