Type-4615 Metal Bellows Seals | John Crane Mechanical Seals
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Type 4615

General-purpose Single Cartridge Metal Bellows Seal

The 4615 is a metal bellows seal that replaces the EZ-1®General-purpose Single Cartridge Seal. It is a member of the 4600 family of cartridge seals.  Like other Type 4600 series cartridge seals, the 4615 design provides reduced installation times, lower maintenance costs and optimal equipment performance; and is ideal for the chemical, pulp and paper, wastewater, food processing and power generation industries. The abrasion and corrosion-resistant Alloy 20CB3 SS bellows enhance reliability by eliminating dynamic O-ring hang-up caused by process contamination, thermal gradients, and material deficiencies. The 4615 replaces the EZ-1®General-purpose Single Cartridge Seal, offering improved value and availability.

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  • California Residents: PROPOSITION 65 WARNING
  • Fits ANSI standard and DIN pumps.
  • Easy to Install
  • Factory assembled and tested, eliminating potential field assembly and installation errors
  • Only one moving part: the bellows.
  • Alloy 20CB3 SS bellows
  • Eliminates O-ring "hang-up" problems.
  • Maintains positive seal face closing forces in upset pressure reversal or vacuum situations.
  • Design eliminates thermal expansion limits of mating ring.


Temperature Limits

-20 to 266°F/-30 to 130°C

Pressure Limits

220 psi(g)/15 bar(g) process pressure

Speed Limits

3600 rpm

Recommended Applications

  • Process pumps
  • Other rotating equipment

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