Pekutherm “HLT” has a broad working temperature range it’s a “soft-scrub” physical action Purging Compound, that vigorously yet gently scours away outgoing plastic, built up previous material, burnt on residues, expels color and off spec.contaminants including gas residues. Pekutherm “HLT” has no chemical reactant, hybrid lubricant, carrier resin, or abrasive additive. It is one hundred percent pure. Pekutherm “HLT” does not melt, upon use it reaches the “soft-scrub” consistency of “bubblegum”, and this is what provides the elastic-like scrub action.