Abstract: The invention relates to a seal for medium-conducting components, whereby the components (12, 13) comprise sealing surfaces (20, 25), which are exactly complementary to each other and which are directly pressed together to form a gap-free seal. The contact surfaces (44) between the sealing surfaces is limited to a narrow region directly adjacent to the medium cavity (19). Said gap-free and dead-volume-free seal can be used, for example in germfree, or sterile processes.

Abstract: The invention relates to a seal for medium-conducting components, whereby the components (12, 13) comprise sealing surfaces (20, 25), which are exactly complementary to each other and which are directly pressed together to form a gap-free seal. The contact surfaces (44) between the sealing surfaces is limited to a narrow region directly adjacent to the medium cavity (19). Said gap-free and dead-volume-free seal can be used, for example in germfree, or sterile processes.

Abstract: The invention relates to a sealing system for media-carrying parts, especially for use in asepsis, comprising a sealing ring (14), preferably a toroidal sealing ring, which is placed on a sealing seat for the purpose of sealing the parts. Said sealing seat is constituted by a sealing channel (22) that substantially surrounds the sealing ring. The sealing channel (22) is composed of sealing surfaces (21a, 21b) of both parts (12, 13) and defines between said parts and between said sealing surfaces a sealing groove (30) into which the sealing ring (14) is deformed when the parts are axially braced against each other until they come into contact. A separating joint (41) adjoins the sealing channel on a side facing away from the sealing groove (30). The sealing channel (22) has at least one expansion chamber (35, 57a, 57b) that deviates from the undeformed cross-section of the sealing ring. Said expansion chamber (35, 57a, 57b) is arranged substantially opposite the sealing groove (30).