Chesterton 155 Standard Single Cartridge Mechanical Seal

1 to 4.75in / 25 to 120mm shaft sizes, single cartridge design for plant-wide flexibility and ease-of-use, oversized seal chamber option available.

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Product Manual

Effective April 15th, 2025 Chesterton has added a 3% surcharge for all of their products. The surcharge will appear as a separate line item on the order.

Highlights...

Features

  • Standard and oversized seal chamber models available
  • Shaft sizes:
    • 1in to 4.75in (Standard Model), 1.375in to 2.625in (OS Chamber Model)
    • 25mm to 120mm (Standard Model Only)
  • -67 to 570°F (-55 to 300°C) operating temperature
  • 28in (711mm) Hg Vacuum to 600psig (40barg)
  • Face Materials:
    • Carbon Graphite
    • Silicon Carbide
    • Tungsten Carbide
    • Duplex Carbide
  • Elastomers:
    • Tetrafluoroethylene-Propylene (FEPM)
    • ChemLast 550 (FFKM)
    • Fluorocarbon (FKM)
  • Up to 5000 FPM operating speed
  • 316 Stainless Steel / EN 1.4401 metal parts
  • Alloy C-276/EN 2.4819 springs
  • ISO-3069C, ASME B73.1, ASME B73.2, NSF61

The Chesterton 155 Standard Single Cartridge Mechanical Seal is designed for plant-wide flexibility and ease-of-use. Available in standard and oversize seal chamber models, shaft sizes from 1in to 4.75in/25mm to 120mm (OS Chamber Model: 1.375in to 2.625in only), and multiple face material and elastomer material combinations.