Interfibe FT Cellulose Interfibe Rheology Modifiers / Thickeners >> Cellulosic SEALANT Interfibe FT is a medium length Jet Process milled cellulose fiber. These fibers offer better uniformity, physical properties, and dispersion characteristics. Interfibe FT will improve sag, slump, oil retention, and tensile strength. Stable viscosity, even fibration, quick dispersion and low resin demand are properties of Interfibe FT. The use of Interfibe cellulose fibers in sealants improves the oil retention, tensile strength, and overall performance of the formulation versus other types of fillers. Grey fiberous powder, biodegradable, non-hazardous, and non-toxic. Hydrophobic (will disperse in water with agitation): Biodegradable, non-hazardous and non-toxic, hydrophobic medium length milled cellulose fiber. Used as rheology modifier in gunnable (cartridge) butyl sealants. Offers stable viscosity and physical properties. Improves sag, oil retention, slump, and tensile strength.