Unique Pump Systems, Kailash Industrial Complex, Vikhroli (W)
| Seal Type | Single Coil Spring Mechanical Seal for Pump (Type 41 & 42) | Material | Seal Faces: Carbon, Silicon Carbide (SiC), Tungsten Carbide (TC) · Seat Faces: Ceramic, SiC, TC · Elastomers: Viton, PTFE, GFT, TTV, EPDM, NBR · Metal Parts: SS 316 | Brand | Unique Pump Systems – Trusted Mechanical Seal Manufacturer | Shaft Diameter | 10 mm to 100 mm | Max Pressure | Up to 30 bar | Temperature Range | -20°C to 150°C | Speed | Up to 3000 RPM | Design Standard | DIN EN 12756 Compliant |
Industrial Mechanical Seal – Engineered for Reliable Pump Sealing
Unique Pump Systems is a leading Mechanical seal manufacturer and supplier in India, from our Mumbai facility offering high-performance pump mechanical seals engineered for leak-proof operation, long service life, and reliable shaft sealing in industrial pumps and rotating equipment nationwide. Our mechanical seals for pumps are designed for high flow at moderate pressure, with hardened components for heavy-duty service, and low operating and maintenance costs.
Available in Type 41 (O-Ring Type) and Type 42 (V-Packing Type) configurations. Type 41 features torque transmission from drive collar to spring and seal ring via O-ring, while Type 42 utilizes PTFE-based elastomer design for universal chemical compatibility. Whether you need a mechanical seal for gear pump or centrifugal pump seal, our products are ideal for demanding process applications across India and global markets.
A mechanical seal for pump creates a controlled sealing interface between rotating and stationary components. Springs and fluid pressure maintain contact between two precision-engineered faces — one rotating with the shaft, one stationary in the pump housing — forming a dynamic pump seal that minimizes leakage while allowing smooth rotation. As a trusted mechanical seal manufacturer, we ensure every mechanical seal pump component meets the highest quality standards.
Spring pressure keeps seal faces in constant contact
A microscopic fluid film lubricates faces, reducing friction
Tight interface prevents leakage while allowing shaft rotation
As leading mechanical seal suppliers, our Type 41 and Type 42 mechanical seals for pumps are critical components in rotating equipment across industries. Our mechanical seal pump solutions are used in:
Whether you need a mechanical seal for gear pump or centrifugal pump seal, our products deliver reliable performance across all industrial applications.
Our pump mechanical seals are available in multiple material combinations to suit your specific fluid, pressure, and temperature requirements. As a premier mechanical seal manufacturer and supplier, we offer:
Complete dimensional data for our mechanical seals for pumps. All dimensions are in millimeters (mm) unless specified otherwise. Select the right pump seal size for your shaft diameter.
| SEAL SIZE | OUTER DIMENSIONS | LENGTH DIMENSIONS | |||||||
|---|---|---|---|---|---|---|---|---|---|
| inch | mm | D3 | D6 | D7 | D9 | L3 | L6 | L7 | L9 |
| 0.875 | 22.22 | 37.00 | 32.00 | 38.10 | 28.50 | 48.00 | 4.50 | 5.50 | 6.80 |
| 1.000 | 25.40 | 40.00 | 35.20 | 41.28 | 31.50 | 48.00 | 4.50 | 5.50 | 6.80 |
| 1.125 | 28.58 | 43.00 | 38.30 | 44.45 | 34.50 | 50.00 | 4.50 | 5.50 | 6.80 |
| 1.250 | 31.75 | 47.00 | 41.60 | 47.62 | 37.90 | 50.00 | 4.50 | 5.50 | 6.80 |
| 1.375 | 34.92 | 49.50 | 44.70 | 50.80 | 41.10 | 52.50 | 4.50 | 5.50 | 6.80 |
| 1.500 | 38.10 | 55.00 | 47.90 | 53.98 | 44.30 | 52.50 | 4.50 | 5.50 | 6.80 |
| 1.625 | 41.28 | 58.00 | 54.25 | 60.30 | 50.50 | 57.00 | 5.00 | 5.50 | 8.15 |
| 1.750 | 44.45 | 59.50 | 57.42 | 63.50 | 57.00 | 62.50 | 5.00 | 5.50 | 8.15 |
| 1.875 | 47.62 | 63.50 | 60.60 | 66.68 | 61.00 | 62.50 | 5.00 | 5.50 | 8.15 |
| 2.000 | 50.80 | 65.00 | 63.75 | 69.85 | 61.00 | 65.50 | 5.00 | 5.50 | 8.10 |
| 2.125 | 53.98 | 68.00 | 70.10 | 76.20 | 70.20 | 67.00 | 5.50 | 6.50 | 9.00 |
| 2.250 | 57.15 | 72.00 | 73.30 | 79.38 | 72.70 | 70.00 | 5.50 | 6.50 | 9.00 |
| 2.375 | 60.32 | 78.50 | 76.45 | 82.55 | 72.70 | 72.00 | 5.50 | 6.50 | 9.00 |
| 2.500 | 63.50 | 81.50 | 79.65 | 85.72 | 76.00 | 72.00 | 5.50 | 6.50 | 9.00 |
| 2.625 | 66.68 | 84.50 | 79.65 | 85.72 | 76.00 | 74.00 | 6.00 | 7.50 | 9.80 |
| 2.750 | 69.85 | 87.50 | 82.80 | 88.90 | 79.00 | 74.00 | 6.00 | 7.50 | 9.80 |
| 2.875 | 73.02 | 90.00 | 85.70 | 95.25 | 81.40 | 78.50 | 7.50 | 5.50 | 11.90 |
| 3.000 | 76.20 | 95.50 | 88.90 | 98.42 | 85.30 | 82.50 | 7.50 | 5.50 | 11.90 |
| 3.125 | 79.38 | 101.00 | 92.05 | 101.60 | 91.50 | 82.50 | 7.50 | 5.50 | 11.90 |
| 3.250 | 82.55 | 103.00 | 95.25 | 104.78 | 91.50 | 84.50 | 7.50 | 5.50 | 11.90 |
| 3.375 | 85.72 | 108.00 | 98.40 | 107.95 | 94.00 | 84.50 | 7.50 | 5.50 | 11.90 |
| 3.500 | 88.90 | 114.00 | 101.60 | 111.12 | 98.40 | 88.00 | 7.50 | 5.50 | 11.90 |
| 3.625 | 92.08 | 114.00 | 104.75 | 114.30 | 100.00 | 88.00 | 8.50 | 5.80 | 13.00 |
| 3.750 | 95.25 | 118.00 | 107.95 | 117.48 | 104.00 | 90.50 | 8.50 | 5.80 | 13.00 |
| 3.875 | 98.42 | 122.00 | 111.10 | 120.65 | 107.00 | 90.50 | 8.50 | 5.80 | 13.00 |
| 4.000 | 101.60 | 125.00 | 114.30 | 123.82 | 110.00 | 95.50 | 8.50 | 5.80 | 13.00 |
Note: All dimensions are in millimeters (mm). For custom sizes or specific material requirements, please contact our engineering team for assistance with your mechanical seal for pump selection.
Our pumps and seals go to plants across India, from Gujarat's chemical corridor and Telangana's pharma clusters to Tamil Nadu's automotive belt and eastern India's steel plants. For buyers in Maharashtra, Gujarat, Tamil Nadu, Karnataka and Telangana, every mechanical seal is manufactured at our Vikhroli, Mumbai works and our engineers help with selection before you order.
Typical India enquiries come from chemical units handling process pumps on acids, alkalis and solvents, pharmaceutical units handling purified-water, solvent and process pumps, and food processing plants needing syrup, juice and process-water pumps.
What India plants typically use our mechanical seals for:
To recommend the right mechanical seal for an India plant, our application engineers will ask for:
Can you supply a mechanical seal to Maharashtra, Gujarat and other parts of India?
Yes. We dispatch mechanical seals from our Mumbai works to plants across India, including Maharashtra, Gujarat, Tamil Nadu, Karnataka and Telangana. Send your requirement through the enquiry form, phone or WhatsApp and our engineers will confirm the right model and price.
Which mechanical seal suits chemical plants in India?
For chemical duties such as process pumps on acids, alkalis and solvents, we usually recommend a Type 41 or Type 42 seal to DIN EN 12756, with face and elastomer combinations matched to the fluid, pressure and temperature.
From metros to smaller industrial towns, here's what brings customers across India to us:
Our engineering team can help you select the right mechanical seal for your pump application in India. Contact Unique Pump Systems - your trusted mechanical seal suppliers in India.
Mechanical Seal — All Locations We Serve
