Single mechanical seal R-21 is used at temperatures from -20 to + 150°C, with a pressure of up to 1.5 MPa and a rotation speed of up to 13m/sec. They are used in centrifugal pumps, turbine pumps, compressors, hot water pumps, mixers and other equipment in the oil, chemical and food industries. Analogue of mechanical seals: John Crane Type 21, Vulcan Type 11, AESSEAL P04 / P04T. Mechanical seal for pump Wilo, K, KM, X, AH, AHP, AH, Calpeda, DAB, Ebara, Grundfos, for pump KSB, Allweiler, SALMSON, ACD Cryo, Flygt, IMP Pumps, LOWARA, PENTAX, Foras, Fristam, for pump SPERONI, ZENIT, Inoxpa, JL, Johnson pump, KOLMEKS, Pedrollo, SAER, Vulcan, WQ, WQK, for pumps Tuchenhagen, ALFA LAVAL, Donjoy, Mission Magnum.