Abstract: A joint for systems for transporting a high temperature heat-transfer fluid is provided. The joint includes a fixed conduit, a first sealing ring joined to the fixed conduit, a rotatable conduit in abutment with the sealing ring, and an outer casing delimiting a chamber. A contact region between the rotatable conduit and the first sealing ring is arranged in the chamber. The outer casing is sealingly engaged with the rotatable conduit by a second sealing ring and with the fixed conduit.

Abstract: A seal assembly includes a fixed seal ring, and a rotary part having a rotary seal ring with a friction edge intended to slide against a counter-track of the fixed seal ring, a receptacle connected to a rotary shaft and provided with teeth intended to be housed inside cavities obtained in a collar of the rotary seal ring in order to drive the rotary seal ring into rotation, and a protection ring disposed around the collar and provided with recessed housings intended to be disposed inside the cavities of the collar and to house the teeth of the receptacle.

Abstract: A seal designed for insertion between a rotating shaft and a fixed casing having an opening through which the shaft is fitted, the seal having a sleeve designed to fit onto the shaft; a first sealing ring fitted to the sleeve; a cup designed to fit inside the opening; and a second sealing ring connected to the cup by a bellows of elastomeric material; the first and second sealing rings cooperate frontally with each other under the axial load exerted by a spring interposed between the cup and the second sealing ring; and the bellows is connected in angularly free manner to the cup to prevent self-induced torsional oscillation and noise resulting from it.

Abstract: An improved front mechanical seal assembly for pumps and fluid mixers, has an empty body that houses a pair of front mechanical seal rings surrounded by an annular chamber ending with an inlet channel obtained in the empty body, one or more channels for introduction of a washing liquid obtained in the empty body and ending into the annular chamber, a flange fixed to the empty body, housed inside the inlet channel and shaped in such manner to determine an overflow that favors the stagnation of the washing liquid in said annular chamber.

Abstract: A seal designed for insertion between a rotating shaft and a fixed casing having an opening through which the shaft is fitted, the seal having a sleeve designed to fit onto the shaft; a first sealing ring fitted to the sleeve; a cup designed to fit inside the opening; and a second sealing ring connected to the cup by a bellows of elastomeric material; the first and second sealing rings cooperate frontally with each other under the axial load exerted by a spring interposed between the cup and the second sealing ring; and the bellows is connected in angularly free manner to the cup to prevent self-induced torsional oscillation and noise resulting from it.

Abstract: A front mechanical seal for pumps with frictional rings and fluid lubrication includes a rotary seal mounted on a support collar, which is formed of a first collar, and a second collar prismatically coupled by means of one or more tongues which are formed on the second collar and contained in corresponding housings on the first collar.