多唇形密封-James walker multi-lip seal
As its name suggests, our Lofilm rod and gland seal operates reliably for
very long periods with the absolute minimum thickness of stable fluid film
on the dynamic contact surface.
The seal comprises a robust gland ring/female adapter, plus one or more
V-shaped intermediate rings, and a header ring. The header ring is a positive
seal, precision moulded with a knife-cut sealing edge to give maximum integrity,
and an annular groove to increase the response to applied pressure.
Special features
Highly versatile seal that reduces stockholding requirements.
Excellent performance at high and low pressures.
No axial compression — no in-service adjustments needed.
Very low leakage rate reduces clean-up and top-up requirements.
Available in split form for major downtime savings.
Available with Self-aligning Gland Ring (see page 39) for use with heavily worn
rams and other arduous duties.
Typical applications
With its ‘dry’ running characteristics,
Lofilm is the high performance seal most suitable for virtually all types of hydraulic
press (main rams and drawback rams), hydraulic cylinder glands and singleacting piston heads, and hydraulic valves.
Operating capabilities
• Maximum operating pressure: 42MPa (6092psi). Modified design/materials
can considerably extend this.
• Temperature range (standard
materials): -20°C to +100°C (-4°F to+212°F) up to 250mm (9.84 in) OD, or to +120°C (+248°F) above 250mm (9.84 in) OD.
• Maximum temperature (special materials): +200°C (+392°F).
• Maximum surface speed: 0.5m/s (98.4fpm). For higher speeds please consult our Technical Support Team
