The WDF Scraper is a Double lip Wiper Seal, composed of two rings. The dynamic
seal is a ring in TRIALON® (compounded PTFE) while the static seal is an
O-Ring in TRIAFLEX®, also acting as an energizer. Depending on the application,
media, cycle speed etc., the PTFE compound is selected and the O-Ring compound
is selected considering the media compatibility, temperature etc.
The lip at the outer edge avoids the dust particles entering into the system for
axially moving rods, hence eliminates the damage to other seals and internal
components. The inner lip retains the Hydraulic fi lm within the system, thereby
eliminating the leakage and also providing adequate lubrication for the sealing
lips. Strongly suggested to use with Back Pumping sealing elements (TRITILT®
Seals for example), that too when experiencing high temperatures, media compatibility
issues, tricky surroundings or when there is a concern related to frictional
losses from Sealing System. Similar to WDE type of Seals but with diff erent
Ø20.00 – Ø2700.00
TRIALON® T415 (Bronze Filled PTFE) with Energiser in
TRIAFLEX® T571 (NBR) (Other Compounds available,so
as to suit the Application Conditions).
-30º C to 200º C (Based on Elastomer Material).
≤ 15.0 m/s
Hydraulic fl uids (Mineral Oil based ), Water, Air
etc, depending on Seal Compounds selected.