Aluminum futures and spot prices (1.14--20)

January 14, 2005 to January 20, 2005 Unit: RMB/ton Aluminum Futures Price on the Shanghai Futures Exchange Aluminum Price quoted on the London Metal Exchange (US$/ton) Opening price Higher price Lower price closing price Opening price Higher price Lower closing price on January 13th January 13 1842.5 1848 1826.5 1830 January January.5 1817.5 1830.5 January January 17 1831.5 1841.5 1821 1822 January 18 Day January 18th 1822.5 1835.5 1810.5 1834 January 19th January 19th 1832.5 1854.5 1821.5 1840 Spot spot price of aluminum in the non-ferrous metals market Aluminum spot price in Huatong Market (99.85%) Opening price Higher price Lower price closing price Opening price Higher price Lower closing price January January January January January January January January January January Source: China International Futures Agency Co., Ltd.

Piston and Rod Seals

Piston Seals and Rod Seals are important seals used in mechanical equipment. Their main function is to prevent liquid and gas leaks and ensure the normal operation of mechanical equipment. Piston seals and rod seals are usually used in hydraulic and Pressure system, such as hydraulic cylinders and Pneumatic cylinder. The quality and performance of these seals directly affect the efficiency and lifespan of mechanical equipment.

The classification of piston seals and rod seals is mainly based on their material and design structure. According to the different materials, they can be divided into rubber seals, polyurethane seals, polytetrafluoroethylene seals, metal seals, etc. According to the different design structures, they can be divided into unidirectional seals, bidirectional seals, rotary seals, etc.

Rubber seals are a common type of seal, and their main material is rubber. Rubber seals have good sealing performance and wear resistance, and are suitable for medium and low pressure hydraulic systems and Pressure system. Polyurethane sealing element is a high-performance sealing element, and its main material is polyurethane. Polyurethane seals have high wear resistance, high temperature performance and high pressure performance, and are suitable for high-pressure hydraulic systems and Pressure system. PTFE sealing element is a corrosion-resistant sealing element, and its main material is PTFE. PTFE seals have excellent corrosion resistance and high temperature resistance, making them suitable for fields such as chemical and food processing. Metal seals are a type of high-temperature and high-pressure seal, mainly made of metal. Metal seals have high temperature and high pressure performance and corrosion resistance, and are suitable for high temperature and high pressure hydraulic systems and Pressure system.

Unidirectional seals and bidirectional seals are classified based on different sealing directions. A unidirectional seal can only prevent the leakage of liquid or gas from one direction, while a bidirectional seal can prevent the leakage of liquid or gas from both directions. Rotating seal is a type of seal that can rotate and is mainly used for sealing rotating shafts. Rotary seals are divided into unidirectional rotary seals and bidirectional rotary seals.

Overall, piston seals and rod seals play a very important role in mechanical equipment. Choosing appropriate seals can improve the efficiency and lifespan of mechanical equipment, reduce maintenance costs and downtime. When selecting seals, it is necessary to comprehensively consider factors such as the working environment, pressure, and temperature of the mechanical equipment to choose a suitable seal.

Universal Piston and Rod Seals,Interchangeable Piston and Rod Seals,Versatile Piston and Rod Seals

DG Zhongxingshun Sealing Products Factory , https://www.zxs-seal.com