Thermax Ultra-Pure N990 Carbon black 1333-86-4 Cancarb Extenders / Fillers >> Carbon black Rubber - Elastomer (Chloroprene, Butyl …) SEALANT >> Pre-formed tape / Gasket T H E R M A X Ultra-Pure Medium Thermal Carbon Black Highest carbon purity and inactive surface chemistry maximize heat and chemical resistance, while minimizing impurities in end products. Ideal for applications which demand very low sulfur levels. Low sieve residue values, minimizing the potential for non-carbon particulate contamination. Thermax Floform Ultra-Pure N990 consists of uniform, soft pellets which are easily dispersed in most applications, yet can withstand the rigours of transportation. Disk Drive Gaskets Due to low reinforcement potential, thermal black imparts low modulus as compared to furnace black in otherwise identical compounds. Thermal black's low reinforcement potential will give compounds lower tensile strength relative to furnace black. The properties unique to thermal black result in compounds with higher elongation properties relative to furnace black. Thermal black's large particle size and low structure result in lower hardness in a compound compared to compounds employing furnace black at equal loadings. Thermal black results in compounds which exhibit lower tear resistance compared with those using furnace black. Compounds with thermal blacks exhibit superior compression set and other dynamic properties compared with those with furnace black. Thermal black has excellent dielectric properties and, when used as a filler, allows various elastomers to retain their high volume resistivity. Since thermal black does not seriously degrade inherent rubber properties, it can often be compounded at very high loading levels. High purity, medium thermal carbon black. Used as a filler in disk drive gaskets. Offers very low sieve residue values and sulfur levels, very good chemical and heat resistance and easy dispersion. Provides low modulus, low tensile strength, high elongation properties, low hardness, low tear resistance, superior compression set and other dynamic properties, very good dielectric properties and very high loading levels.