Abstract: Apparatus for housing a shaft coupling, comprising an outside axially extending sleeve for connection to a first shaft casing, and for partially covering a pair of generally aligned shafts and a shaft coupling connecting the shafts; and an inside axially extending sleeve for connection to a second shaft casing, and for further covering the shafts and the shaft coupling, wherein the inside sleeve is radially spaced from the outside sleeve and is axially slidable into the interior of the outside sleeve to produce an annular opening for access to the shafts and shaft coupling. The apparatus further comprises radial sealing means for sealing the space between the inside and outside sleeves.