Wave spring mechanical seal type VMS- 3 is very similar to seal types VMS - 1 and VMS - 2. Main difference is the wave spring instead of multiple springs or single spring. Reason is usage in high viscosity media or media containing solids. Mechanical seal design with wave spring prevents sticking and blocking of small multiple springs. Another advantage of wave springs is more uniform force on the seal face. A steep characteristics curve makes wave springs more sensitive and allow small axial space requirements.
Face materials
carbon-graphite
Cr - steel
Cr - Ni steel
Cr - Ni steel hard faced
Tungsten Carbide
Silicon Carbide
alumina (Al2O3)
Operating limits
p = 16 bar
t = -40 ... 220°C
v = 20 m/s
VMS - WAVE SPRING SEALS
This Type Of Multi Wave Spring Unbalanced Seal Is Widely Used In Oil Refineries, Slurry Pump, Viscous Application, High Pressure Pump, Hot Oil Application, Nuclear Plant, Petrochemical Plants.
MATERIAL OF CONSTRUCTION
1. Seals Faces --- Carbon / T.C./. Sic Vs Sic/ Tc / Ceramic / Stellite
2. Secondary Seals ---- Viton / Epdm/ Ptfe/ Gft
3. Metal Parts -- S.S.316 , Alloy 20 , Hast-Alloy
OPERATING LIMITS
1. Shaft Dia --- 12 Mm T0 150 Mm
2. Pressure --- 30 Bar
3. Temp ------- 20 To 330 Deg. C
