Unique Pump System, Kailash Industrial Complex, Vikhroli West
| 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, offering high-performance pump mechanical seals engineered for leak-proof operation, long service life, and reliable shaft sealing in industrial pumps and rotating equipment. 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.
As a leading mechanical seal manufacturer and supplier in India, we offer:
Our engineering team can help you select the right mechanical seal for your pump application. Contact Unique Pump Systems – your trusted mechanical seal suppliers in India.
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