Core structure and sealing principle

The product adopts an integrated structure of "high-performance jacket+elastic energy storage spring", and the core design revolves around "dual protection+adaptive compensation". The jacket is made of high-performance polymers such as polytetrafluoroethylene (PTFE) and its modified materials, PEEK, etc., which have excellent corrosion resistance and low friction characteristics; The built-in energy storage spring is made of high-quality elastic materials such as stainless steel, nickel alloy, Hastelloy C276 or Inconel 718, ensuring elastic stability during long-term use.

In terms of sealing principle, after installation, the spring is compressed to generate persistent elastic force, which pushes the jacket to tightly fit the groove and sealing surface, forming the initial sealing pressure; When the system pressure is applied, the pressure will assist the spring to store energy, further compressing the jacket and enhancing the sealing effect. This dual mechanism of "spring pre tightening+pressure assistance" can automatically compensate for the wear, offset, and dimensional changes caused by thermal expansion of the sealing surface, always maintaining reliable sealing and effectively avoiding medium leakage.

Product series and material compatibility

• （1） Diversified series layout

Based on different working conditions, the product has formed five core series, accurately matching various application scenarios：

• V series: suitable for reciprocating/low-speed rotating motion, with high pressure resistance capability, suitable for dynamic sealing scenarios such as hydraulic cylinders and piston rods;
• C-series: Designed with high spring force, specifically designed for high-pressure static or slow dynamic sealing, meeting high load sealing requirements;
• F series: low load spring force configuration, suitable for low/medium pressure dynamic sealing, balancing sealing effect and motion resistance;
• U series: Outstanding low friction characteristics, suitable for dynamic scenarios with strict friction coefficient requirements, reducing equipment energy consumption;
• O series: specially designed for high load end face sealing, suitable for extreme static high-pressure working conditions, with strong sealing stability.
• （2） Accurate material selection

The jacket material relies on the independently developed fluoropolymer formula by Mohechuang, covering multiple models such as M2402 modified PTFE (temperature resistance -210 to+300 ℃, creep resistance, anti bite), M2419 graphite filled PTFE (excellent heat and chemical resistance), etc., which can be flexibly selected according to the medium type and temperature range; The spring material is optimized for special working conditions such as corrosion and high temperature. For example, corrosion-resistant nickel alloy is selected for H2S containing media scenarios, and Inconel 718 is used for ultra-high temperature working conditions to ensure structural stability under all working conditions.

Core advantages and application value

• （1） Outstanding performance advantages
• Full working condition adaptation: The temperature resistance range covers -210 ℃ to+300 ℃, which can easily cope with ultra-low temperature ball valves (-196 ℃) and high temperature industrial equipment scenarios; The pressure resistance can reach up to 1500LB, and the sealing reliability can still be maintained under fluctuating pressure and impact load; Excellent chemical corrosion resistance, able to resist corrosion from various media such as acid, alkali, hydrocarbons, hydrogen, etc.
• Long life maintenance free: The spring compensation mechanism reduces jacket wear and, combined with high wear-resistant materials, significantly extends the service life compared to traditional seals; No additional lubrication system is required, reducing maintenance costs and equipment downtime, achieving efficient operation.
• Flexible and convenient installation: supports multiple installation methods such as compression fitting and bonding, with a compact structure that adapts to complex groove designs and simplifies assembly processes; Modular design facilitates spare parts replacement, eliminates the need for complex tools, and improves maintenance efficiency.
• （2） Core application scenarios

The product is widely used in ball valve sealing, hydraulic systems, compressors, vacuum pumps, semiconductor equipment and other scenarios, covering multiple industries such as chemical, energy, mechanical manufacturing, semiconductor, pharmaceutical, etc. Typical cases include one-way/two-way valve seat sealing for ultra-low temperature ball valves (operating temperature -196 ℃ to room temperature), and valve body and stem sealing for room temperature ball valves (-50 ℃ to 200 ℃, 1500LB pressure), all of which demonstrate stable and reliable sealing performance, effectively ensuring efficient operation of equipment.