TLQ Series Piston Seal
With over 30 years of application success, the TLQ series piston seal is a hydraulic seal with a proven reliable low-leak seal for both low and high pressure systems.
The TLQ series piston seal is a double-acting filled T- LON® PTFE compound with a square elastomer energizer offering premium seal stability in reciprocating applications along with an x-ring elastomer energizer on the OD to minimize leakage (helps seal low molecular weight gases). The filled PTFE seal ring is manufactured with an interference fit with the bore and optimum compression with the square and x-ring energizers. This offers excellent sealability at low pressures and high pressures when the cylinder experiences ballooning. The square energizer helps prevent the seal from rocking often experienced with a standard o-ring.
Face Grooves (Optional):
For applications of high pressure rise rates, pressure spikes, and rapid change of direction, the seal is apt to experience blow-by. To prevent blow-by and to energize the seal rapidly, face grooves are added to both sides 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:
- Accumulators
- Mobile Hydraulic Cylinders
- Lift Cylinders
- Agriculture Equipment
- Holding Cylinders
- Filling Machines
- Testing Machinery
Technical Data:
(1) T-LON® seal compound determines allowable pressure and velocity ranges
- Velocity: Up to 10 ft/s
- Pressure: Up to 8500 psi
(Function of e-gap and T-LON® compound. Max velocity and pressure cannot be used together)
Most Common:
BRONZE FILLED PTFE (“21” or “22”)
- Highest Extrusion Resistance (Higher bronze content increases extrusion/wear resistance; I.E. larger e-gap allowable)
- 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 (“P”)
- 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
FKM SHORE 75 A (“V”)
- Working Temp. Range -10°F to 400°F
- Commonly used in higher temperature applications or with acids, alcohols, fuels, and transmission fluids.