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Spring Energized Seal
LNG Marine Loading Arm Cryogenic Sealing Device
Product Name: Cryogenic sealing device for LNG marine loading arms
Cryogenic seals are specialized seals designed to operate in extreme cold temperatures, typically below -150°C, such as those encountered in liquefied natural gas (LNG) marine loading arms. These seals are critical components of the loading arms, as they prevent the LNG from escaping into the environment and maintain the safety and integrity of the transfer process.
LNG marine loading arms are used to transfer liquefied natural gas from a storage facility or terminal to a carrier vessel. The loading arms are typically made up of several sections, including the swivel joint, arm, and flange. Cryogenic seals are located at various points along the loading arm, including the swivel joint, which is the primary point of transfer between the terminal and vessel.
Cryogenic seals are designed to withstand the extreme cold temperatures and pressures involved in LNG transfer, as well as the thermal cycling that occurs during the transfer process. They are typically made of specialized materials, such as elastomers and plastics, that can maintain their flexibility and sealing properties at very low temperatures.
The performance of cryogenic seals is critical to the safety and efficiency of the LNG transfer process. Any leakage of LNG can be hazardous and potentially cause damage to the environment, so it is essential that the seals are designed and maintained to the highest standards.
As a spring-actuated, pressure-assisted sealing device, spring-energized seals are designed to be leak tight and support several critical factors: chemicals and corrosion resistance, lowest coefficient of friction, and dry running capabilities as well as handling extreme temperatures both hot and cold and high pressure.
Along with these elements, the final design solution relies on the type of application, the customer’s requirements and specifications, and the system itself. Is it static, dynamic, radial or axial sealing? What is the media, hardware, groove dimensions, surface finish, etc.? Whether adding a back-up ring, heel or double lip, we will design engineer a precision fit, custom solution for you.
For more information, please send contact KAFLON.
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