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Poly-Fast 72 Part C Softener

Poly-Fast 72 Part C Softener


Add Poly-Fast 72-40 Part C Softener to create rubber as soft as Shore A6. Each 20 parts of Part C added to 100 parts total A + B lowers the hardness by approximately 10 to 15 Shore A points. NOTES: Part C should be weighed and thoroughly mixed with the proper amount of Part B prior to combining with Part A.

WARNING: This product can expose you to chemicals including Butyl benzyl phthalate (BBP) and Phenylmercuric compounds, which are known to the State of California to cause reproductive harm. For more information, go to


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45-lb Unit of Poly-Fast 72 Part C Softener (~5 gallons)

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