Type 1678

Stepped shaft, balanced sinusoidal wave-spring, O-Ring mounted Mechanical Seal, similar to Type 1677, most commonly utilized in higher-pressure pump applications.

Vulcan Types 1677, 1677M and 1678 all have sinusoidal continuous wave-springs without joints or weld-spots, for maximum spring reliability.

Stocked as a standard assembly with stepped-size down Type 8 DIN LONG O-Ring seat with anti-rotation provision.

Features
Double wave spring for strength and reliability
Ideal for higher pressure pump applications
Compact design for confined spaces
Hydraulically-balanced Mechanical Seal faces
Stepped face for stepped shafts
General purpose Mechanical Seal
Operating Limits
Temperature: -30C to +140C
Pressure: Up to 40 bar (580 psi)