8484200020
- Gaskets and similar joints of metal sheeting combined with other material or of two or more layers of metal; sets or assortments of gaskets and similar joints, dissimilar in composition, put up in pouches, envelopes or similar packings; mechanical seals
- Mechanical seals
- Mechanical face sealing device made of two movable rings (one ceramic mating, with a thermal conductivity lower than 80W/mK and the other carbon sliding), one spring and a nitrile sealant on the external side