John, the link to the Mouser website refers to a similar, but not the correct connector. The mating connector for the LEMO plug as used with VPI arms is the LEMO PHG.0B.304.CLLD52Z, unfortunately not available at Mouser. A workaround is to use the LEMO socket according to this link:
http://www.mouser.com/ProductDetail/LEMO/EGG0B304CLL/?qs=sGAEpiMZZMvf6myxbP4FpFBrG%252bqjJSud6JhGEDrCpeA%3d
Regards
Max
http://www.mouser.com/ProductDetail/LEMO/EGG0B304CLL/?qs=sGAEpiMZZMvf6myxbP4FpFBrG%252bqjJSud6JhGEDrCpeA%3d
Regards
Max