Rigid in compression locking gas springs have oil on both sides of the piston so that the chamber between (where the rod enters the body) and the piston are always full of oil. The oil is contained in the closed end of the tube and a floating piston retains the gas in the nose bearing end chamber. When a compressive load is applied to the locked rod, the oil between the piston and the closed end of the tube does not compress and the rod cannot move. Applications include operating, massage and veterinary tables and wheel chair recline and support systems amongst many others.