The WDP Wiper is similar to WDD Wiper Seals but in TRIATHANE®
(Poly-Urethane) material, mostly suggested to be used in conjunction
with a back pumping Primary Seal/Secondary Seal like TRITILT®
(RSS style) Seal. The inner lip holds the fi lm of oil within the system
without being leaked out and the outer lip shall prevent any dust
particles entering the system.