Mechanical seal R-706E is used in the following types of pumps: Grundfos CNP-CDL series, as well as Speroni VS series and central heating pumps. Standard shaft size: 12 mm and 16 mm. Mechanical seal for Wilo, K, KM, X, AX, AXP, AX, Calpeda, DAB, Ebara, Grundfos pumps, for KSB pumps, Allweiler, SALMSON, ACD Cryo, Flygt, IMP Pumps, LOWARA, PENTAX, Foras, Fristam pumps, for SPERONI pumps, ZENIT, Inoxpa, JL, Johnson pump, KOLMEKS, Pedrollo, SAER, Vulcan, WQ, WQK pumps, for Tuchenhagen pumps, ALFA LAVAL, Donjoy, Mission Magnum.