+91 97691 77244 +91 93264 07022
High-Performance Sealing Systems

Cartridge Mechanical Seals

Cartridge Mechanical Seal ⚡ Pre-Assembled Assembly

Technical Data

  • Standard Faces: SiC / TC / Carbon
  • Elastomers: Viton / EPDM / FFKM
  • Metal Parts: SS316 / Hastelloy-C
  • Pressure Limit: Up to 40 bar
  • Temp. Limits: -40°C to 260°C
  • Shaft Speed: Up to 25 m/s

Modular Sealing Solutions

Cartridge mechanical seals represent the pinnacle of modern industrial sealing technology. Unlike component seals, which are installed as separate components and are prone to axial alignment and face-handling errors, cartridge seals are pre-assembled, pre-aligned, and pre-tested by the manufacturer.

Micro Engineering supplies high-durability cartridge assemblies equipped with standard preset spacer clips. The entire seal system—comprising seal faces, gland plate, sleeve, springs, and gaskets—is installed onto the pump shaft as a single unit, completely avoiding common installation mistakes.

Perfect for chemical process pumps, paper mill agitators, refinery transfer pumps, and high-pressure steam boilers.

Features & Benefits

Engineered to maximize mean time between failures (MTBF).

Preset Spacer Clips

Pre-installed spacer centering clips ensure accurate axial setting of seal faces. Avoids calculations and protects delicate faces during manual mounting.

Hydraulically Balanced

Balanced face geometries reduce closing force under high pressures. This minimizes friction heat, limits power consumption, and protects against face scoring.

Environmental Ports

Integrated ports in the gland allow direct connection for flushing (F), quenching (Q), and cooling options to wash away abrasives and prevent dry running.

Shaft Isolation Sleeve

The high-grade SS316 sleeve fully isolates the pump shaft from process fluid contact, completely avoiding fretting and abrasive erosion of the shaft.

Engineering & Performance Factors

Comparing single and double cartridge designs.

Parameters Single Cartridge Seal Double Cartridge Seal
Design Layout One primary sealing face set. Two sealing face sets (inboard & outboard).
Barrier Chamber None (flushing option only). Pressurized barrier/unpressurized buffer space.
Process Media Standard, non-hazardous process fluids. Toxic, volatile, hot oil, or crystallizing slurries.
Max Operating Pressure Up to 25 bar Up to 40+ bar
Leakage Safeguard Standard vapor containment Zero Process Leakage (Barrier blocks leak)
Typical Applications Boiler feedwater, water transport, cooling towers, general solvents. Toxic hydrocarbons, vacuum distillation pumps, abrasive slurries, paint & adhesives.

Typical Applications

Broad industrial utility across modern rotating systems.

01

Centrifugal Process Pumps

Standard cartridge seals fit directly into ANSI/API pump chambers, sealing process fluids in refineries and petrochemical plants.

02

Agitators & Mixers

Double cartridge setups absorb shaft runout and deflective forces on chemical reaction vessel shafts.

03

Boiler Feed & Condensate

Handles high-temperature boiler feedwater loops inside power generation plants without requiring cooling jackets.

04

Abrasive Slurry Pumps

Double balanced seals prevent hard tailings and crystalline slurry deposits from contacting and wearing the seal faces.

Why Choose Our Cartridge Seals?

Micro Engineering supplies premium cartridge seals optimized for heavy industrial loads, ensuring robust alignment and absolute leak-free operation.

✓

100% Pressure Hydro-Tested

Every cartridge assembly undergoes rigorous static and dynamic pressure checks before dispatch to guarantee zero leaks.

✓

API 682 Compliance

Designed and built strictly matching API 682 seal plans, ensuring complete reliability in high-risk refinery setups.

✓

Helium Lapped Flatness

Seal faces are lapped within 1 to 2 light bands to maintain an optimal fluid film thickness between the faces.

✓

Precision CNC Glands

Gland plates are machined out of solid forged SS316 on high-tolerance CNC centers for perfect bolt circle alignment.