103 series of mechanical seals for internal loading, internal flow, single end, single spring, non balanced structure. And coil spring drive. It is designed for more than ten units which belong to the one and the Petrochemical Department. It has been proved that its structure is simple, easy to be manufactured, easy to disassemble, reliable in use, economical and durable, and to meet the national conditions. It is suitable to be installed in the seal chamber of all kinds of new and old rotary pumps.

Scope of application:

Sealed medium: the use of different materials can adapt to medium corrosive or non corrosive medium.

Sealed chamber pressure:

Good medium with high viscosity: ≤ 0.8MPa

Low viscosity medium for lubricity: ≤ 0.5MPa

The temperature of the sealing cavity: -45 C ~ +200 C

Line speed: ≤ 14m/s