no, this is a kind of plasticine called chavant... i acctually have to order it from the states.. it's sulphur-free plastiline. NSP, professional oil based non-drying sculpting clay, good with silicone rubber. there is soft , medium and hard. after, i send it to a molding facility, and they give them to me in what ever material i choose... because it does not react with anything... it is great to work with, easy and best of all CLEAN