Sealing Putty Formula

[Formula 1]
Polyisobutylene 38.5 Liquid Polyisobutylene 61.5 Liquid Paraffin 38 Rosin 10
Zinc oxide 54 Asbestos wool 50 Chromium oxide 10
This formula is mainly used for the sealing of metal rivet seams and other seams. Shear strength 49KPa. Has a long shelf life, storage for one year without deterioration.
[Formula 2]
Dimethicone Rubber Paste Dibenzoyl peroxide Zinc Oxide Titanium Oxide This formulation is mainly used for the sealing of rivets and welding gaps. During construction, it is compounded with a sealing cloth, scratched or injected into the joint and vulcanized at a temperature of 200°C for 12 hours. Shear strength greater than 1.1MPa. Operating temperature range -60-250 °C.
[Formula 3]
Part A Chlorosulfonated polyethylene 100 Titanium dioxide 25 Fumed silica 2
Part B Deuterated Rosin 5 E-44 Epoxy Resin 10 Accelerator 1 Antioxidant A 1 Antioxidant NA 1
This formula is mainly used for outdoor glass steel or plastic radome seals. Room temperature vulcanization 6-7 days. Shear strength greater than 2.2MPa. When preparing, the first component of the composition of 85% toluene solution. A: B = 8.5:1.
[Formula 4]
Polysulfide Rubber 100 Carbon Black 30 E-44 Epoxy Resin 5 Lead Dioxide 7.5
Dibutyl phthalate 6.75 Calcium stearate 0.75 Lead stearate 0.2 Polyethylene polyamine 0.5
This formula is suitable for underwater sealing and has good water resistance, seawater resistance and aging resistance. Room temperature vulcanization 20-25min. The tensile strength is 3-4MPa. Peel strength of metal and neoprene is 83 N/cm.