Sealing means, improved slip joint apparatus and/or methods of use thereof

A slip joint apparatus,

• said slip joint apparatus including a first item having a first end;
• and
• a second item having a second end;
• the second end of the second item being arranged so that it can be moved into overlapping engagement with the first end of the first item in use;
• clamping means movable between a clamped position, wherein a clamping force is applied to the first and second items being joined together in use;
• and
• an unclamped position, wherein a clamping force is removed or reduced to allow separation of the items in use;
• and
• sealing means comprising:
• first surface facing away from the clamping means, the first surface comprising a maximum length of 3 mm+/−in an unclamped position and where the first surface is arranged to be located on an outer surface of the first item in use,
• first and second side walls extending away from said first surface towards the clamping means with an interior angle between the first and second side walls is less than 140 degrees, said interior angle measured within the sealing means, and
• a third side wall connecting the first and second side walls, the third side wall extending from the first and second side walls away from the first surface;
• and
• wherein the first surface and the first and second side walls of the sealing means are arranged so as to allow a degree of pivotable and/or angular movement of at least the first surface of the sealing means with respect to the outer surface of the first item in both the clamped and unclamped positions in use.