Rotary Seal Design Guide - Seals Unlimited

Catalog EPS 5350/USAProduct OfferingParker Oil SealsProfilesTable 6-7. Product ProfilesStandardProfilesOther Profiles Available Features ApplicationsSB SC SA SM SD General purpose. Spring-loadedsingle lip. For oil retention or greaseretention.Electric motors, gearboxes, pumps,fans and rolling mills.TB TC TA TM TD General purpose. Spring-loadeddouble lip. For oil retention. Excludeslight dust and fluid.Electric motors, gearboxes, pumps,fans, rolling mills and customequipment.SCE SAE SME Spring-loaded single lip. For oil orgrease retention. Low speeds.High runout conditions. Electricmotors, gearboxes, pumps, fans,rolling mills.KB KC KA KM General purpose. Double lip springlessdesign. For grease retention.Excludes light dust and fluid.Electric motors, gearboxes, pumpsand fans.66VB VC VA VM General purpose. Springless singlelip. For grease retention.OSB OSC OSA Outside lip design. Spring-loadedsingle lip. For rotating bores. Press fiton shaft.Electric motors, gearboxes, pumpsand fans.Electric motors, gearboxes, pumpsand fans. For grease applicationswhere bore rotates.WGeneral purpose rod wiper. Forrotary and reciprocating service.Springless single lip. For dustexclusion.Low retention, dust exclusion orscraper for reciprocating shafts.TDN3 NSC4 NTC4 Pressures to 200 psi (13.7 bar)depending on design. FKM materialoften used for high temperaturesnormally associated with frictioncaused by pressure.Pumps, washers, compressors andblowers.DB DC Dual spring-loaded lips. Used when the separation of twofluids is required. The design is alsoused for high contaminationapplications in keeping out a dirtyenvironment.SBF SCF TBF TCF Specially designed seals that utilize alayer of PTFE bonded to the sealinglip to reduce excessive wearing onthe shaft and seal.With the PTFE lip, the seal can beutilized in dry running applications, athigher speeds and accepts a broaderrange of chemical compatibility.TNThe TN lip element is PTFE bondedto NBR and combines the low frictionproperties of PTFE with the flexibilityof rubber.The TN seal was specially developedfor severe service applications.CB CL (Low Speed) CH (High Speed) One-piece unitized designs. Thesealing elements ride on a properinternal sealing surface which offersthe advantage of eliminating the costof preparing or resurfacing the shaft.Reducers, gearboxes and torquehubs.03/28/066-10 Parker Hannifin CorporationEPS DivisionToll Free: (800) 233-3900www.parkerseals.com