Pioneer 4306 Magnesium silicate 14807-96-6 Zemex Industrial Minerals Extenders / Fillers >> Talc or Magnesium Silicate SEALANT Pioneer 4306 is a lamellar 200 mesh talc and is an excellent anti tack and parting agent for rubber and plastic surfaces. In filled systems, Pioneer 4306 offers enhanced surface appearance, viscosity control and reinforcement. Its particle size gives it good viscosity for easy trowling and edging in sealants. Pioneer 4306 is used as an additive in lubricants, where it extends graphite and improves the viscosity of the grease. Zemex’s Applications and Technical Service Group would be pleased to discuss your particular use and how the Pioneer Products and our other quality mineral products can solve your formulation and performance problems. Stable lamellar 200 mesh talc (magnesium silicate). Used in sealants. Imparts good viscosity for easy trowling and edging.