For more than 38 years now, VULKAN Lokring‘s success has been founded on worldwide patented, unique connecting elements for refrigerant lines. Until today 2,000,000,000 LOKRING connections have been successfully used in the industrial volume production of refrigerators, freezers and air conditioning systems. Originally developed for the absolute extreme conditions of space technology, we have continually improved our connections to meet the requirements of air conditioning technology, thus developing into the leading specialist in this area on the world‘s market