Cylinders UNION is the largest manufacturer of cylinders within the UK with over 100 years expertise in supplying security products and ironmongery around the world. Whether you require a cylinder that is individually keyed, keyed alike, to pass or even part of a complex master key system, UNION are proud to offer a range of high quality cylinder systems to suit any application or project requirement UNION keyPRIME™ Patented cylindersUNION keyPRIME™ is the NEW patented reversible 6 pin cylinder system ideal for a wide range of applications. Utilising innovative dimple technology, this system offers good master key capability an... UNION keyULTRA™ Patented Cylinders keyULTRA™ is UNION's leading patented six pin cylinder system made in the UK. Utilising innovative technology this system offers secure patent protection until 2028 and is now exclusively available... Traditional CylindersUNION offers a variety of traditional cylinders to meet the demands of every application. Cylinders are available in four different variations. If the length you require is not listed please... DTEC Cylinders UNION DTEC is a high security cylinder system. It operates combining a traditional 6-pin mechanism together with the added security of four DTEC side pins and a side bar. The DTEC system has over...