四氟弹簧蓄能密封圈-James walker Lionsele LF
Description
This compact seal is the high performance answer to fluid sealing in extreme operating conditions of temperature, speed and chemical media.
The seal comprises a PTFE U-ring energised by a highly developed finger
spring. This arrangement provides ample resilience to keep the lips in sealing
contact with their mating surfaces at low pressure, whilst the pressure-responsive
seal profile ensures excellent sealing performance at high pressures.
Lionsele LF is suitable for reciprocating, static and some rotary applications.
Special features
Very low friction for smoothest operation.
Seize-free action after long periods in static mode.
Excellent performance at high and low pressures.
Special spring design gives an evenly distributed load across large deflections.
Fits ‘O’ ring housings.
Wide temperature range and almost universal media compatibility enable
this seal to work in the most aggressive environments.
Typical applications
Lionsele LF is recommended as a highperformance replacement for elastomeric
or polymeric lip seals and ‘O’ rings working in extreme conditions, typically in hydraulic and pneumatic systems, oil and gas valves, defence and aerospace, cryogenic, automotive, medical equipment, and general industrial applications.
Operating capabilities
Maximum operating pressure:
Dynamic duties: 35MPa (5076psi)
Static duties: 40MPa (5802psi).
Temperature range:
Virgin PTFE: -250°C to +260°C
(-418°F to +500°F).
PTFE/aromatic polyester: -130°C to
+300°C (-202°F to +572°F).
• Maximum surface speed:
5m/s (984fpm).
Materials of construction
Body
Fluolion (virgin PTFE); Fluolion GR with 25% carbon/graphite; Fluolion B60
with 60% bronze; or Fluolion with 10% aromatic polyester.
Each Fluolion grade has specific frictional, wear and chemical resistant qualities.
Please consult our Technical Support
Team regarding your optimal material.
Finger spring
Stainless steel as standard, with cobalt/chrome alloy available. Stainless steel is recommended for the majority of applications. The cobalt/chrome is NACE-approved and resists stress cracking in sour H2S environments.
