Spare Sealing Sleeves HQ, (ø 63,5 mm) for Hoek Triaxial Cell Hoek Cells have been designed to be used for triaxial testing of rock specimens. Hoek Cells comprise a steel body complete with two quick release self-sealing couplings, two steel end caps
which are screwed to the cell body, 2 pieces of upper and 2 pieces of lower loading caps with spherical coupling and a rubber
sealing sleeve to separate the specimen from the cell fluid.