Mechanical Seals
PPC Mechanical Seals was founded in 1958 in Baton Rouge, Louisiana and was one of the first mechanical seal companies to provide repair service on all types of seals. PPC then took the knowledge and experience it gained from repairing seals to design, engineer, and manufacture their own proprietary products.
Today PPC Mechanical Seals products are operating in some of the most demanding applications throughout the process industry. Customers large and small are utilizing the quality products produced by PPC, and relying upon the excellent service and support provided by our experienced staff. Sealing pumps, mixers, compressors, centrifuges, and other pieces of rotating equipment is routine for PPC.
PPC offers a complete range of seal designs including single and double cartridge seals, metal bellows seals, split single and double seals, as well as custom engineered seals. Each is available in a broad range of materials and sizes.
PPC places a significant emphasis on “service”. Experienced and highly trained personnel are available 24/7. Engineering, Sales, and Distributor personnel are capable of supporting, troubleshooting, and training on all aspects of mechanical seals.
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Single Cartridge Seals
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Dual Cartridge Seals
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Split Seals
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Metal Bellows
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Component Seals
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Cryogenic Seals
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Accessories
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Piping Plans
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Plan 23 - Single seals - Closed loop circulation through a heat exchanger
Piping PlansDescription: Plan 23 is a closed loop system using a pumping ring to circulate product through a heat exchanger and back to the seal chamber ...
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Plan 31 - Single seals - By-pass from discharge through an abrasive separator
Piping PlansDescription: Plan 31 is a variation of Plan 11, where an abrasive separator is added to the flush line. In this plan, the product is introduced to the abrasive separator from the discharge of the pump, clean flush is piped from the separator to the seal chamber and solids are returned to the pump suction ...
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Plan 32 - Single seals - External flush source to seal
Piping PlansDescription: Plan 32 uses a flush stream brought in from an external source to the seal. This plan is almost always used in conjunction with a close clearance throat bushing ...
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Plan 41 - Single seals - By-pass from discharge through an abrasive separator & a heat exchanger
Piping PlansDescription: Plan 41 is a combination of Plan 21 and Plan 31. In Plan 41, product from pump discharge is first put through an abrasive separator and then to the heat exchanger before being introduced to the seal chamber ...
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Plan 52 - Dual seals, unpressurised - External reservoir unpressurised liquid buffer
Piping PlansDescription: Plan 52 uses an external reservoir to provide buffer fluid for the outer seal of an unpressurized dual seal arrangement ...
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Plan 53A - Dual seals, pressurised - External reservoir pressurised liquid barrier
Piping PlansDescription: Plan 53A uses an external reservoir to provide barrier fluid for a pressurised dual seal arrangement ...
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Plan 53B - Dual seals, pressurised - Liquid barrier through a heat exchanger & pressurised by a accumulator
Piping PlansDescription: Plan 53B, previously termed 53 Modified, uses an accumulator to isolate the pressurizing gas from the barrier fluid ...
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Plan 53C - Dual seals, pressurised - Liquid barrier through a heat exchanger with differential pressure tracking piston accumulator
Piping PlansDescription: Plan 53C uses a piston accumulator to provide pressure to the system. It uses a reference line from the seal chamber to provide a constant pressure differential over the chamber’s pressure ...
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Plan 54 - Dual seals, pressurised - External pressurised barrier system / source
Piping PlansDescription: Plan 54 utilizes an external source to provide a clean pressurized barrier fluid to a dual seal.
Advantages: Can provide pressurized flow to multiple seal installations to reduce costs ...
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Plan 62 - Quench seals - External quench on atmospheric side of seal
Piping PlansDescription: Plan 62 is a common plan to improve the environment on the atmospheric side of single seals by quenching with steam, nitrogen or water ...
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Plan 65 - Single seals - External leakage detection reservoir
Piping PlansDescription: Plan 65 is a liquid leakage detection plan normally used for single seals. It utilizes a level switch on a reservoir to set off an alarm when excess leakage is detected ...
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Plan 72 - Secondary containment seals - Low pressure buffer gas injected to outer seal cavity
Piping PlansDescription: Plan 72 for secondary containment uses an external low pressure buffer gas, usually nitrogen, regulated by a control panel that injects it into the outer seal cavity ...
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