Single Seals

Advantages of Single Mechanical Seals

A single mechanical seal consists of stationary and rotating seal faces that are made from one hard and one softer material. A single mechanical seal offers considerable cost and energy savings when used instead of gland packing.

All our single mechanical seals incorporate hydraulically balanced seal-face technology for reduced power consumption, helping our customers reduce their energy usage whilst increasing reliability.

Single Seals with Environmental Control Options

General service applications are efficiently sealed with an ‘O’ ring mounted, balanced, self–aligning seal. The SAI™, CS™, USI™ and NSI™ component seals and the SCUSI™ and Convertor II™ cartridge seals effectively seal all general service applications.

At the other end of the application spectrum, hazardous and dangerous products demand an engineered sealing approach. Double seals with closed–loop convection tank systems provide the necessary back–up protection.

Between these application extremes lie non–lubricating and/or non–hazardous fluids that alter their state with environmental changes. A single seal, with an API type gland, provides temperature control and protection from atmospheric contact for these applications.

Secondary fluids introduced through the Quench and Drain ports to the atmospheric side of the seal faces, control the environment without dilution of the process fluid. Water, steam, grease, oil and other suitable barrier fluids can be used.