Precision Machined Components
Pump Seal Sleeves Built to Your Drawing
SleeveMFG manufactures precision-machined pump seal sleeves and rotational components for pump OEMs, rotating equipment manufacturers, and industrial maintenance providers. From our Dongguan facility, we produce components directly from your CAD models or technical drawings, holding the tight tolerances required for fluid handling and mechanical seal integrity.
±0.005 mm
Critical tolerances
Ra 0.2 μm
Surface finish
H6/H7 & h6/h7
Standard fits
Engineering Standards
Designed for Mechanical Seal Integrity
Pump seal sleeves act as the primary barrier against wear on pump shafts. When these components fail, the resulting downtime is costly. Our manufacturing process focuses on the mechanical properties essential for sealing environments.
Concentricity & Runout
We maintain strict control over concentricity to prevent vibration and premature mechanical seal failure.
Surface Finish
Achieving Ra 0.2 μm or lower is standard for contact surfaces, reducing friction and extending the lifespan of O-rings and seal faces.
Dimensional Accuracy
We hold tolerances to ±0.005 mm on critical OD/ID fits, ensuring compatibility with standard seal sizes and bearing assemblies.
Manufacturing Capabilities
CNC Turning, Milling & Precision Grinding
Our facility combines CNC turning, milling, and precision grinding to produce components that meet demanding geometric requirements. We support projects from single-piece prototypes to high-volume production runs.
OD/ID Grinding
Essential for the tight fits required by seal housings and shaft interfaces.
Threading & Keyways
Integration of complex features such as internal/external threads, keyways, and cross-holes directly into the sleeve body.
Thin-Wall Machining
Specialized techniques to minimize material distortion during the turning of thin-walled sleeves.
Inspection & Verification
Every batch is verified using CMM, profile projectors, and calibrated bore gauges to ensure compliance with your print specifications.
Material Selection
Engineered for Corrosive & High-Wear Environments
We source and machine a wide range of industrial metals to suit your specific pump operating conditions.
Stainless Steel
For chemical resistance and high-strength applications across general process and sanitary pump builds.
- · 316 / 316L — chemical resistance
- · 17-4PH — high strength
Hardened Steels
For heavy-duty drive shafts and components subject to high torque and shock loading.
- · 4140
- · 4340
- · 52100
Specialty Alloys
For aggressive, corrosive, or high-temperature service where standard stainless grades are insufficient.
- · Monel
- · Inconel
- · Hastelloy
Secondary Operations
Surface Treatments & Finishing Services
A pump seal sleeve is only as effective as its surface integrity. We coordinate full-service secondary operations so your components arrive ready for installation.
Heat Treatment
Quenching, tempering, and induction hardening to increase surface hardness and wear resistance.
Coatings
Hard chrome plating, electroless nickel plating, and PVD/DLC coatings to reduce friction and improve corrosion resistance.
Passivation
Standard procedure for stainless steel components to prevent oxidation and contamination.
Applications
Support for OEM and MRO Programs
We structure our manufacturing services to align with the distinct needs of different industrial buyers.
Program Type
For OEMs
We provide consistent, repeatable production quality for new equipment assembly, supported by full material certification and inspection reports.
- ✓ New equipment build programs
- ✓ Material certification per shipment
- ✓ Repeatable batch-to-batch quality
Program Type
For MRO & Repair Shops
We offer fast-turnaround machining for replacement sleeves. If a drawing is unavailable, we can reverse-engineer from your worn physical samples to restore your equipment to operational status.
- ✓ Fast-turn replacement runs
- ✓ Reverse engineering from samples
- ✓ Legacy equipment restoration
Quality Control
Documentation with Every Shipment
SleeveMFG operates under strict quality management protocols. Every part is manufactured according to the provided tolerances, fits (H6/H7/h6/h7), and geometric dimensioning and tolerancing (GD&T) requirements. We provide the following documentation:
Report 01
Material Test Reports
(MTRs)
Report 02
First Article Inspection
(FAI reports)
Report 03
Certificate of Conformance
(CoC)
Inspection Methods
- CMM Verification Standard
- Profile Projectors Standard
- Calibrated Bore Gauges Standard
- GD&T Compliance Standard
- H6/H7 & h6/h7 Fits Standard
Logistics & Supply
Global Delivery from Dongguan
Located in Dongguan, our facility benefits from a dense, high-end manufacturing supply chain. This allows us to maintain competitive pricing while providing the high-precision output required for global industrial markets. We manage the export process for customers across North America, Europe, and Asia, ensuring your components are securely packaged and delivered to your facility.
NA
North America
EU
Europe
APAC
Asia
Get a Quote
Request a Quote for Your Project
To receive a prompt RFQ response, please provide your engineering files (PDF, STEP, STP, DWG) along with the following details:
- 1Material grade and hardness requirements
- 2Quantity per order
- 3Any specific surface finish or coating specifications
- 4Required delivery timelines
SleeveMFG
Custom Sleeves. Made to Your Drawing.