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Polyurethane rubber can be mixed into two categories, one is polyester polyurethane (AU), the other is polyether polyurethane (EU). AU type has excellent oil, fuel and solvent resistance, but is susceptible to hydrolysis, EU type is not susceptible to hydrolysis, and has considerable fuel and oil resistance compared to low acrylonitrile (18-22% ACN) nitrile butadiene rubber or HNBR. Compared with other elastomers, PU oring made of polyurethane rubber has excellent wear resistance, high tensile strength and high elasticity.
FFKM (Kalrez ring) perfluorine-rubber material is the best rubber material with high temperature resistance, strong acid and alkali resistance and organic solvent resistance among all elastic sealing materials at present. Perfluorinated rubber can resist the corrosion of more than 1600 chemical solvents such as strong acid, strong base, organic solvent, ultra-high temperature steam, ether, ketone, ester, nitrogen compounds, hydrogen carbide, alcohols, aldehydes, furan and amine compounds. High temperature resistance up to 320℃. FFKM has nearly 40 years of experience with perflurane seals in a variety of industries. Lanhe seal ring are manufactured to AS-568 (USA), DIN-3771 (Germany), BS-1806 (UK), ISO3601 (International), JIS-B2401 (Japan) and other standards, or can be customized to your specific size.
FFKM O-rings & seals Perfluoroelastomer FFKM O-rings High Temperature O-rings FFKM O-rings & viton FFKM Perfluoroelastomer Metric O-rings Perfluoroelastomer (FFKM) Material for O-rings
Fluorocarbon (FKM) & Viton O-Rings Viton O-Rings FKM Viton O Ring FKM Metric Size O-Rings Fluoroelastomer (FKM) O-Rings FKM/FPM O-rings
Axial face seal (Gamma Seal) manufactured by lanhe is a combination of metal casing and rubber lip seal. Gamma seal can be used in greasy and dirty environment as a primary sealing solution and can also acts as an auxiliary dirt seal that helps protecting bearings and radial seals from water, dirt, grease, moisture, and other contaminants.The rubber part is usually made of nitrile butadiene rubber and FKM, and the metal part is made of steel aisi 1010, Available in 9RB and RB type,The 9RB profile is a gamma seal. The design of the metal part offers additional protection in the form of a labyrinth in the housing,should there be a higher pollution levels compared to the RB profile.