[Three rain valve to recommend the star product - Mechanical seal] Introduction: the role of rubber seals making it the defense, chemical, petroleum, coal, transportation and machinery manufacturing industry in the national economy on the basis of the main parts and accessories . In recent years, with the rapid economic growth H7N-75 mechanical seal, rubber seals manufacturing industry has maintained double-digit growth. According to "China Rubber seals manufacturing industry sales forecasting and demand analysis to upgrade Outlook" data show 2011, Chinese rubber seals manufacturing industry scale industrial output value of nearly 10 billion, an increase of over 20%. China rubber seals manufacturing industry over the scale of more than 150 companies, domestic rubber seal on the whole industry showed small-scale enterprises, low level of technology developments. Type of view from the enterprise economy, private, foreign-funded enterprises accounted for more than 95%, which is the main type of economic sectors; while H7N-60 machine closures, business is essentially concentrated in the East, from the number of firms, sales revenues and assets to Look, East China market concentration is higher. [Three rain valve to recommend the star product - Mechanical seal] Description: Selection of the main parameters are: the seal chamber pressure (MPa), fluid temperature (℃), working speed (m / s), as well as the characteristics of the fluid effective seal installation space and so on. Selection of the basic principles are: 1. According to body seal chamber pressure, determine the sealing structure using balanced or unbalanced type, single face or double face and so on. The operating speed of the mechanical seal, determine the use of rotary or static, hydrodynamic or non-contact type. The temperature and fluid properties H7N-68 mechanical seal, determine friction and auxiliary sealing materials, as well as the correct choice of lubrication, washing, heat, cooling and other mechanical seal circulation protection system. 4. According to the available space to install the seal to determine multi or single spring or spring wave spring, built-in or externally mounted. H7N-68 _ Xiangfan mechanical seal mechanical seal mechanical seal _H7N selected three rain provided by Valve Co., Ltd. Tianjin three rain. Valve Co., Ltd. Tianjin three rain (www.tjsymf.com) strong, credible, in Tianjin seal industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead the three rain valve into the brilliant and you work for a better future!