The invention provides a plunger tip for die casting machines which is excellent in slidability and sealing properties. The intra-articular devices can be bicomponent in nature comprising a biostable, articulating, non-absorbable component and an absorbable component in the form of a solid or microporous liner interfacing with the tissue of defective or diseased joint to support in situ tissue engineering. A clip securely connected at a bottom end to a top distal end of the first strap.