Inflatable seal arrangement

A seal arrangement for an element rotating around its axis comprising:

• a seal carrier spaced from said element;
• and
• an elastic sealing ring at least partially surrounded by said seal carrier, said sealing ring comprising:
• a holder segment connecting said sealing ring to said seal carrier so said sealing ring does not rotate;
• at least one ring segment which is expandable by means of a pressurizable medium, at least part of said ring segment extending outside an area within the seal carrier;
• and
• at least one lip segment connected to said ring segment and contacting said element to thereby seal said element,
• wherein the ring segment is arranged at least partially within the holder segment and the holder segment is at least partially movable in a non-resilient guide groove in the seal carrier, said guide groove extending substantially parallel to the axis of said element and concentrically surrounding said axis.

A seal arrangement for an element rotating around its axis comprising:

• a seal carrier spaced from said element;
• said element having a sealing surface at a first angle to an axis of said element, the sealing surface having a diameter which expands as it nears said seal carder to form the shape of a hollow cone;
• and
• an elastic sealing ring at least partially surrounded by said seal carrier, said sealing ring comprising:
• a holder segment connecting said sealing ring to said seal carrier so said sealing ring does not rotate;
• at least one ring segment which is expandable by means of a pressurizable medium, at least part of said ring segment extending outside an area within the seal carrier;
• and
• at least one lip segment connected to said ring segment and contacting said element to thereby seal said element, said lip segment comprising at least one sealing lip, the at least one sealing lip extending at a second angle to the axis of said element, said second angle being smaller than said first angle.