This Alfa Laval mechanical seal equivalent is a precision-engineered replacement mechanical seal for Alfa Laval pump applications, designed as a 100% direct, drop-in alternative for LKH, SolidC, and MR series centrifugal pumps. As a trusted Alfa Laval pump mechanical seal replacement, it features a hydraulically balanced design to handle pressure spikes and water hammer in hygienic process lines. This Alfa Laval LKH pump mechanical seal replacement uses FDA-compliant materials (Carbon, SiC, EPDM) with a smooth, open-profile construction that optimizes Clean-In-Place (CIP) performance. Whether you need an Alfa Laval pump seal for dairy, beverage, or pharmaceutical processing, this Alfa Laval mechanical seal delivers OEM-equivalent reliability at a competitive price. The unitized cartridge design simplifies installation and reduces MRO costs for maintenance teams seeking a dependable Alfa Laval mechanical seal equivalent.
Key Features
• 100% Compatible: A direct replacement mechanical seal for Alfa Laval pump that matches OEM envelope dimensions for LKH, SolidC, and MR series—no pump modification required. This Alfa Laval mechanical seal equivalent installs in minutes.
• Hygiene First: Smooth, open-profile construction facilitates CIP/SIP cleaning, eliminating bacteria traps found in standard seals. An essential Alfa Laval pump mechanical seal replacement for food and dairy plants.
• FDA Certified Materials: All wetted components (Carbon, SiC, EPDM) are fully FDA compliant, ensuring safety for food and beverage production. Specify this Alfa Laval LKH pump mechanical seal replacement for sanitary applications.
• Balanced for Pressure: Hydraulically balanced face geometry handles pressure spikes and water hammer without leaking—a key advantage of this Alfa Laval pump seal over unbalanced alternatives.
• Simplified Installation: Unitized cartridge design eliminates loose springs and O-rings, preventing installation errors on the production floor. This Alfa Laval mechanical seal ships ready to install.
Technical Specs | Materials | ||
Mediums | Water, oil and weakly-corrosive mediums | Stationary Ring | Ceramic/Sic/TC |
Pressure | ≤1.0MPa | Rotary Ring | Carbon/Sic/TC |
Temperature | -20℃ to 120℃ | Secondary Seal | NBR/EPDM/Viton |
Speed | ≤15m/s | Spring and Metal Part | Stainless Steel |


Product Specifications
| D1 (mm) | Size Code | D3 | D7 | L1 | L4 |
| 8 | 0008 | 18.2 | 21.0 | 11.2 | 7.0 |
| 9 | 0009 | 18.2 | 24.0 | 16.2 | 7.0 |
| 10 | 0100 | 20.6 | 24.0 | 16.2 | 7.0 |
| 11 | 0110 | 20.6 | 24.0 | 16.2 | 7.0 |
| 12 | 0120 | 21.8 | 26.0 | 17.2 | 7.0 |
| 13 | 0130 | 21.8 | 26.0 | 17.2 | 7.0 |
| 14 | 0140 | 26.4 | 28.0 | 18.2 | 7.0 |
| 15 | 0150 | 26.4 | 28.0 | 18.2 | 7.0 |
| 16 | 0160 | 26.4 | 32.0 | 19.2 | 8.0 |
| 17 | 0170 | 29.5 | 32.0 | 19.2 | 8.0 |
| 18 | 0180 | 29.5 | 35.0 | 19.2 | 8.0 |
| 19 | 0190 | 29.5 | 35.0 | 19.2 | 8.0 |
| 20 | 0200 | 31.6 | 38.0 | 20.2 | 8.0 |
| 22 | 0220 | 33.6 | 40.0 | 20.2 | 8.0 |
| 25 | 0250 | 39.6 | 44.0 | 20.2 | 9.0 |
| 28 | 0280 | 45.0 | 46.0 | 21.2 | 9.0 |
| 30 | 0300 | 46.6 | 50.0 | 22.2 | 9.0 |
| 32 | 0320 | 46.6 | 54.0 | 24.2 | 9.0 |
| 35 | 0350 | 50.8 | 58.0 | 26.2 | 10.0 |
| 38 | 0380 | 54.3 | 60.0 | 27.2 | 10.0 |
| 40 | 0400 | 57.3 | 64.0 | 28.2 | 10.0 |
| 45 | 0450 | 61.3 | 66.0 | 30.2 | 10.0 |
| 50 | 0500 | 67.8 | 72.0 | 32.2 | 10.0 |
| 3/8" | 0095 | 23.50 | 22.23 | 22.20 | 6.40 |
| 1/2" | 0127 | 26.00 | 25.40 | 22.20 | 6.40 |
| 5/8" | 0158 | 30.00 | 31.75 | 23.80 | 8.70 |
| 3/4" | 0190 | 32.50 | 34.93 | 23.80 | 8.70 |
| 7/8" | 0222 | 37.50 | 38.10 | 25.40 | 8.70 |
| 1" | 0254 | 44.00 | 41.28 | 27.00 | 9.50 |
| 1 1/8" | 0286 | 48.00 | 44.45 | 28.60 | 9.50 |
| 1 1/4" | 0317 | 50.00 | 47.63 | 28.60 | 9.50 |
| 1 3/8" | 0349 | 54.50 | 50.80 | 30.20 | 9.50 |
| 1 1/2" | 0381 | 58.50 | 53.98 | 30.20 | 9.50 |
| 1 5/8" | 0412 | 64.00 | 60.33 | 36.50 | 11.10 |
| 1 3/4" | 0444 | 67.00 | 63.50 | 36.50 | 11.10 |
| 1 7/8" | 0476 | 71.00 | 66.68 | 39.70 | 11.10 |
| 2" | 0508 | 73.50 | 69.85 | 39.70 | 11.10 |
Workshop
This workshop is equipped with professional processing equipment and integrated with standardized material warehousing management, enabling a one-stop production process from precision machining to finished product delivery. It ensures part machining accuracy and production efficiency, meeting various high-specification manufacturing requirements.




Product Research, Development and Testing
Our Product R&D and Testing focuses on optimizing seal performance through advanced simulation and material analysis. All alfa laval mechanical seals undergo rigorous trials, including thermal cycling and pressure tests, to ensure durability, minimal leakage, and long service life in demanding industrial environments.




Industry Solutions




Case Study
Dairy Plant Upgrade: A milk processing plant was spending too much on OEM spare parts for their LKH pumps. We supplied these compatible replacements. The alfa laval mechanical seals handled the daily hot caustic wash cycles perfectly, reducing their annual MRO spend by 35%.
Testimonials
These fit our LKH-10 and LKH-60 pumps perfectly. We can't tell the difference from the original, except for the better price.
—Maintenance Manager, Dairy Cooperative
FAQs about Alfa Laval Replacement Mechanical Seal for Pump
Q: Is this seal suitable for CIP/SIP cycles?
A: Yes, absolutely. The materials (SiC and FDA EPDM) are specifically chosen to withstand the rapid temperature changes and aggressive chemicals used in Clean-In-Place and Sterilization-In-Place procedures.
Q: Is this mechanical seal a direct replacement for genuine Alfa Laval seals?
A: Yes, it is a 100% direct, drop-in replacement. This seal is specifically designed to be fully compatible with Alfa Laval’s proprietary single mechanical seals used in their LKH, SolidC, and MR series centrifugal pumps. The unitized (cartridge) design ensures easy installation without the need to assemble loose parts, matching the original dimensions and fit.
Q: Which Alfa Laval pump models does this Alfa Laval LKH pump mechanical seal replacement fit?
A: It fits LKH, SolidC, and MR series pumps. Common sizes include 25mm to 55mm shaft diameters. Check your pump model or measure your shaft diameter to confirm fitment.
Q: Can I get this Alfa Laval mechanical seal equivalent with different face materials?
A: Yes. While standard is SiC vs Carbon, we also offer SiC vs SiC for abrasive media and Tungsten Carbide for severe duty. Contact us with your application details.

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