PB92 Seals of closed type. It has two mechanical seals, diaphragm and hydro-lock (labyrinth) sections. Diaphragm bag is made of high temperature rubber (up to +302 °F (+150 °C)). When oil inside the seal expands, its excess is discharged through two check valves installed in series. This design allows using seal PB92 in the wells with high gas content. Gas entering the bag is released through the check valves that prevent bag failure.   PB103 Closed-type seal design is similar to the seal 4PB92A, except it has the hydrodynamic thrust bearing of bigger size, which is capable to take thrust load created by the pump up to 2645 lb (1200 kg). It is used in ESP systems where the design of the pumps does not have thrust bearing in pump sections. PB92T Closed-type seal is similar to the seal PB92, except general rubber parts that are made of AFLAS with temperature rating up to 392 °F (200 °C).   PB114 The seal is designed for pumps of group 6 (for casing 6 ¨ý"). Its design is similar to the seal 3PB92, differing in its geometry and intended for motors of bigger power and dimensions with pumps each section of which has its own thrust bearing. 1PB92 Closed-type seal design is similar to the seal 2PB92, except it has the thrust bearing which is capable to take thrust load created by the pump up to 1102 lb (500 kg)). It is used in ESP systems where the design of the pumps does not have thrust bearing in pump sections.   1PB114 Design is similar to the seal PB114 and designed for pumps of group 5A (for casing 5 ¾"). Its differs with only mounting dimentions. 1PB92A Closed-type seal design is similar to the seal 1PB92, except it has the hydrodynamic thrust bearing, which is capable to take thrust load created by the pump up to 1654 lb (750 kg). It is used in ESP systems where the design of the pumps does not have thrust bearing in pump sections.   PB114A Design is similar to the seal PB114, except it has the hydrodynamic reinforced thrust bearing, which is capable to take thrust load created by the pump up to 3307 lb (1500 kg). It is used in ESP systems where the design of the pumps does not have thrust bearing in pump sections. 2PB92 Seal of closed type. It has two bag sections and three mechanical seals. This ensures more reliable electric motor protection against entering of formation fluid. Seal bags are made of high temperature rubber (up to +302 °F (+150 °C)). When oil expands, the excessive oil is discharged through three check valves installed in series. It is recommended for installation in wells with high gas content.   3PB114A Seal section has three end seals, diaphragm, labyrinth sections and thrust bearing that can carry axial load up to 1500 kg. Head and base are made of corrosion-resistant steel. 3PB92 Closed-type seal, its design is similar to the seal PB92, but it has better compensation capability. It is intended for tandem motors with power 188 hp to 402 hp (140 kw to 300 kw).   4PB114A Seal section is the analogue of 3PB114A. It has enhanced compensating performances and designed for sectional motors with horsepower up to 500 kWt. 3PB92T Seal is similar to the seal 3PB92T, except it is completed by general rubber parts made of AFLAS with temperature rating up to 392 °F (200 °C).   PB130 Closed-type seal design is similar to the seal PB114, except it has the hydrodynamic reinforced thrust bearing of bigger size, which is capable to take thrust load created by the pump up to 4409 lb (2000 kg). It is used in ESP systems where the design of the pumps does not have thrust bearing in pump section. 6PB92 Open type seal section has three end seals and three labyrinth sections. It is designed for pumps with thrust bearings.   PB172 Seal section is the analogue of 3PB114A. It has different dimensions and is designed to complete submersible motors with 185 mm housing and centrifugal pumps of group 8. 6PB92A Seal section is the analogue of 6PB92. It has a reinforced thrust bearing that is able to carry axial load up to 750 kg. This unit is designed for vertical wells (vertical deviation not more than 20°) with high temperature of formation fluid.