... , 4-8 hours full curing. General purpose silicone sealant spray is a single-component, acetoxy sealant. superior resistance to most chemicals,free primer for ... ml / pc , 24,25 pcs / carton.Range of USE:The sealant is designed for waterproof and weatherproof sealing for all kinds ... repair, crack grouting,and non-porous building materials. General Purpose silicone sealant spray