Superwool Prime Bulk, our newest fibre chemistry for applications requiring high performance with a classification temperature of 1300°C (2370°F).
Superwool Prime Bulk is manufactured using patented low shot technology offering improved mechanical performance with exceptional thermal and physical properties.
Superwool Prime Bulk has excellent thermal stability and retains the original soft fibrous structure up to a continuous use temperature ranging from 1150 – 1200°C (2100 – 2190°F). Superwool Prime Bulk contains no binder and does not emit fumes or odour during the first firing.




