Mechanical Seals

Custom Machined Mechanical Seal Sleeves

The performance of a mechanical seal is dictated by the surface integrity and dimensional precision of the sleeve it rotates against. SleeveMFG provides custom-machined seal sleeves for pumps, mixers, agitators, and other critical rotating equipment.

We manufacture directly from your engineering drawings, 3D models, or existing physical samples, ensuring the exact fit required to prevent leakage and maximize seal life.

Request a Quote View Capabilities
Diameter Range
Ø3 – Ø500 mm
Tolerance
±0.005 mm
Surface Finish
Ra 0.2 μm
Custom machined mechanical seal sleeve

Precision Engineering for Sealing Applications

A seal sleeve must maintain precise concentricity and surface finish to avoid premature seal failure. Our production process is calibrated to meet the strict requirements of rotating equipment manufacturers and repair shops.

Dimensional Accuracy

Tight tolerances on ID/OD and concentricity to ensure proper seal compression.

Surface Finish

Grinding to Ra 0.2 μm or finer for the smooth interface required by seal faces and O-rings.

Geometry Control

Precision machining of shoulders, grooves, and keyways to match original equipment specifications.

Fitment

Achieving H6/h6 and other standard fits for easy installation and reliable operation.

Materials and Coatings for Harsh Environments

Mechanical seal sleeves often operate in corrosive or abrasive media. We machine a wide range of materials and coordinate specialized surface treatments to extend component service life.

Common Materials

  • Stainless Steel

    316L, 304, 17-4PH, 15-5PH for corrosion resistance.

  • Corrosion-Resistant Alloys

    Inconel, Monel, and Hastelloy for aggressive chemical or high-temperature environments.

  • Hardened Steels

    4140, 420, and 52100 for high-wear applications.

Surface Treatments

  • Hard Chrome Plating

    For increased hardness and wear resistance.

  • Electroless Nickel Plating

    For uniform coating thickness and corrosion protection.

  • PVD / DLC Coating

    For extreme surface hardness in high-friction or abrasive environments.

  • Heat Treatment

    Nitriding, induction hardening, or quenching and tempering to improve base material properties.

Support for OEM and MRO Needs

We service both original equipment manufacturers (OEMs) and maintenance, repair, and overhaul (MRO) operations.

For OEM Manufacturers

We provide repeatable, batch-produced sleeves that meet your exact specifications. Whether you are launching a new pump line or sourcing for existing equipment, we provide the consistent quality and documentation required for industrial supply chains.

For MRO and Repair Companies

When a machine is down, you need a replacement sleeve quickly. We produce one-off or small-batch replacement sleeves from your drawings, sketches, or worn samples. If you have a legacy part with no documentation, we can reverse-engineer the component to get your equipment back in operation.

Manufacturing Capabilities

Our machining envelope covers prototype quantities through mass production, with grinding-level precision available on every order.

Parameter Capability
Diameter Range Ø3 mm – Ø500 mm
Length 3 mm – 1500 mm
Tolerance Down to ±0.005 mm (Grinding)
Surface Finish Down to Ra 0.2 μm
Concentricity Down to 0.01 mm
Materials Stainless, Alloy Steel, Nickel Alloys, Copper Alloys
Volume Prototypes to Mass Production

Request a Quote for Custom Seal Sleeves

To receive a quotation, please send your engineering drawings or 3D files (PDF, STEP, DWG, DXF) to info@sleevemfg.com.

If you are requesting a replacement for an existing part, please provide:

  1. 1 Clear photos of the component.
  2. 2 Key dimensions (ID, OD, Length).
  3. 3 Material requirements or operating environment details (e.g., fluid type, temperature).
  4. 4 Required quantity.

SleeveMFG

Email: info@sleevemfg.com

Phone: