This epoxy putty will not yellow with exposure to UV, and hardens in 10 minutes, back in service in an hour, with it becoming full strength in 24 hours. Fibreglass crack sealer / sealant. Our 50g Bondloc Steel-Reinforced Repair Epoxy Putty Stick is a hand kneadable, speciality epoxy putty that mixes in 1 minute for permanent repairs to many substrates.
eBay