TLI Series Piston Seal
With over 30 years of application success, the TLI hydraulic piston seal is a proven reliable seal for both low and high pressure systems.
The TLI seal is a double-acting filled TLON® PTFE compound with a T-shaped elastomer energizer and two high compressive strength nylon back-up rings designed for extreme pressures in reciprocating applications. The filled PTFE seal ring is manufactured with an interference fit with the bore and optimum compression with the T-shaped energizer. This offers excellent sealability at low pressures and high pressures when the cylinder experiences ballooning. The two back-up rings must be installed with the inner radius facing the center of the seal and are designed assymetrical to prevent loader damage during the life of the seal.
Advantages:
- Low seal drag/friction (Minimize energy loss)
- No Stick-slip (Smooth Operation)
- Long seal life from T-LON® filled PTFE compounds
- Available for cylinders up to 45″ diameter
Applications:
- Heavy Duty Hydraulic Cylinders
- Agriculture Equipment
- Excavators
- Testing Machinery
Technical Data:
(1) T-LON® seal compound determines velocity and seal life
- Velocity: Up to 5 ft/s
- Pressure: Up to 10,000 psi (Function of e-gap and T-LON® compound. Max velocity and pressure cannot be used together)
Most Common:
BRONZE FILLED PTFE (“21”)
- Highest Extrusion Resistance (Higher bronze content increases extrusion/wear resistance)
- Good sealability
GLASS/MoS2 FILLED PTFE (“31”)
- Good wear resistance for tubes with rougher surface finish
- More chemical resistant and used in applications when seal could run dry
(2) Loader compound determines temperature and chemical compatibility
Most Common:
NBR SHORE 70 A
- Working Temp. Range -30°F to 230°F (250°F intermittent)
- Commonly used with greases, aliphatic hydrocarbon mineral and vegetable oils, and various hydraulic fluids
(3) Back-up rings prevent seal extrusion and allow larger e-gaps. Note temperature and chemical limitations
Most Common:
MoS2 Filled Polyamide
- Working Temp. Range – 65°F to 250°F
- Commonly used with greases, aliphatic hydrocarbon mineral and vegetable oils, and various hydraulic fluids. Avoid water based fluids.