Type 1678 - Wave Spring Mechanical Seals | Vulcan Seals
Mechanical Seals

Wave Spring Mechanical Seals

Type 1678

Wave Spring Mechanical Seals

Type 1678 Wave Spring Mechanical Seal

Stepped shaft, balanced sinusoidal wave-spring, ‘O’-Ring mounted Mechanical Seal, similar to Type 1677, most commonly utilised 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.


  • 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: -30°C to +140°C
  • Pressure: Up to 40 bar (580 psi)
  • For full Performance Capabilities please download data sheet

Limits are for guidance only. Product performance is dependent on materials and other operating conditions.

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  • Vulcan Type Number
  • Shaft size
  • Seal face materials
  • Elastomer materials
  • Quantity

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