103、104、105、109、110、111型结构是国内最早生产、推广和应用的标准形式，已广泛安装在新老类型回旋式泵的密封腔内。103、104、105均为内装内流、非平衡型,它们适用于压力较低的介质。109、110、111是内装、内流平衡结构适用压力较高，可达2.5MPa。
主要技术参数
密封介质：水、油中等以下腐蚀性介质。
介质温度：-20℃--+150℃
介质压力:0-0.8MPa
线速度: ≤20m/sec
The 103, 104, 105, 109, 110, 111 structures are the earliest standard forms of production, promotion and application in China, and have been widely installed in the sealing cavities of new and old rotary pumps. 103, 104 and 105 are all built-in internal flow and non-equilibrium type, which are suitable for medium with low pressure. 109, 110 and 111 are built-in and internal flow balanced structures, with high applicable pressure up to 2.5MPa.
Main technical parameters
Sealing medium: corrosive medium below water and oil.
Medium temperature: - 20 ℃ - + 150 ℃
Medium pressure: 0-0.8Mpa
Linear speed: ≤ 20m / sec