This type of commutator cleaner is intended for repeated use and is flexible.
We do recommend that, like most engineers will do when replacing carbon brushes, that you clean the commutator on the motor armature. This can massively extend the life of the new brushes and makes the motor work more effectively as then the carbons have a better contact with the commutator itself.
UK Whitegoods Limited Unit 5 & 6 Bonnyton Industrial Estate Munro Place KILMARNOCK KA1 2NP email: spares@ukwhitegoods.co.uk 0845 172 8002