1,Material:NBR,HNBR,NBQ,FKM,CR,PTFE,EPDM,SILICONE ... as dust, dirt and moisture.18.Type:Enclosed bonded dual lip, seal with projected a dust lip, spring loaded ... as dust, dirt and moisture.22.Type:Enclosed bonded seal with two spring loaded sealing lips.23.Uses:Economical ... separating two sealing medium from one another.23.Type:Bonded seal with two spring loaded sealing, lips25.Uses:Applications which ...