Ideal Standard A861310NU is the splined cap and splined locking ring repair kit used on selected thermostatic cartridge assemblies fitted to Markwik 21+ and Contour 21+ thermostatic basin mixers.
This is a cartridge service part rather than the complete thermostatic cartridge. It is used where the splined cap and locking ring section of the cartridge assembly needs to be renewed and should be matched against the exact mixer model and cartridge family before ordering.
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