This is a replacement spare wax capsule thermostatic element for a Sirrus SK1400-2 & SK1400-5 Thermostatic Cartridges. Further to Sirrus, the cartridge / shower mixer valve may be branded under their other brands Showerforce or Newteam. The Sirrus SK1400-2 is used on the following Sirrus / Newteam / Showerforce mixing valve models. As a result, this element is also used in these models: - Showerforce / Newteam 970, 971 and 972 - Sirrus TS1400 Thermostatic Shower - Sirrus SK1400-4 Thermostatic Cartridge Assembly - Sirrus SK1400-1 Thermostatic Cartridge Assembly - Sirrus SK1400-2 Thermostatic Cartridge Assembly - Sirrus SK1400-3 Thermostatic Cartridge Assembly - Sirrus SK1400-5 Thermostatic Cartridge Assembly - Sirrus SK1400-6 Thermostatic Cartridge Assembly - Assy TS1400 - Bristan QT TLSHX C Quadrant Shower