Hammerite Radiator Enamel Aerosol is a specially formulated spray paint to provide a heat resistant brilliant white finish on water-filled household radiators and hot water pipes. Provides a tough long lasting finish, that resists yellowing and prevents rust. Also has a low odour. Touch dry in 4-6 hours. HMMREGAERO Radiator Enamel has the following specifications Finish Gloss. Pack type Aerosol. Size 400ml.