It has been brought to our attention that 'Viton' material used in manufacture of oil seals and 'O' rings, produces a highly corrosive acid (Hydrofluoric) when subjected to tempera tures above 315° C. The resulting contamination can have extreme consequences o n human tissue since it is almost impossible to remove after contact. We therefore recommend the following procedure when it is n ecessary to inspect any equipment that has been subjected to a high temperature i.e. Visually inspect for any gaskets or seals which have suffered from he at; they will appear black and sticky. If this is affirmed. Make enquiries to ascertain the material composition. Any Fluoro-elastomer (Viton, Fluorel or Tecmoflon) should be considered dangerous but natural rubber and nitrile are non-hazardous.

• Operator Manual Ta300

Operator Manual Ta300

If Fluoro-elastomer seals have been used, then the affected are a MUST be decontaminated before undertaking further work. Disposable Heavy Duty Gloves (Neoprene) MUST be worn and the affected area decontaminated by washing thoroughly with Limewater (Calcium Hydroxide solution). Any cloths, residue and gloves used MUST be safely discarded after use.