Main advantage of bearing oil seal 1) excellent anti-chemical character. It almost applies to all mediums. 2) temperature range is very wide. 3) anti oil function is very good. 4) long service life. Applications Rubber Oil Seal Ring are applied widely in mechanical sealing, pressure vessel, gas compressor, reaction vessel, heatexchanger, boiler, bearing ,filter and so on. Product NameBearing Oil Seal FeatureRubber oil seal MaterialChrome steel ; Stainless steel; Plastic ;Nylon;Ceramic SizeInner dia * Outer dia* Thickness; Non-standard; Customized TechnologyCasting& Machining Precision GradeP0 P6 P5 P4 P2 are all available HardnessHrc60-65 CageSteel ; Brass; Stainless Steel StructureSingle row ; Doulbe row; 4 row ServiceOEM, Customized PackagingCartons & Plywood CasesChina Oil Seal website:http://www.bearingde.com/bearing-rubber-transmission-accessories/oil-seal/