Interfibe 185 Cellulose Interfibe Rheology Modifiers / Thickeners >> Cellulosic SEALANT Interfibe 185 is a coarse milled, cellulose fiber. These fibers offer high levels of thixotropy and excellent physical properties. Along with the ease of dispersion found in all of the Interfibe products, 185 will improve sag, slump, oil bleed, and tensile strength. 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 fibrous powder, biodegradable, non-hazardous and non-toxic. Hydrophobic (will disperse in water with agitation): Biodegradable, non-hazardous and non-toxic, hydrophobic coarse milled cellulose fiber. Used as rheology modifier in concrete sealants. Offers high levels of thixotropy and very good physical properties. Improves sag, oil retention, slump, and tensile strength.