Flygt Mechanical Seals For Flygt Pump 2610 2620 2630 2640 4610 4620
The Flygt Mechanical seals for flygt pump 2610, 2620, 2630, 2640, 4610, and 4620 are precision-engineered 20mm Plug-in Cartridge Seals designed as direct OEM replacements. These double-seal units (motor side + impeller side) feature a robust Tungsten Carbide (TC) face combination and Viton elastomers, built to withstand the harsh conditions of submersible wastewater, sewage, and dewatering applications. Offering exact dimensional interchangeability with original Flygt part numbers (e.g., 769.94.30), they ensure reliable motor protection and extended pump life in demanding environments.
Key Features
• Classic "Plug-In" Replacement: The definitive aftermarket replacement for the standard Flygt "Plug-in" or "Griploc" rubber bellow seals used in 2000 and 3000 series pumps.
• Dual Seal System: Often sold as an Upper and Lower set. The Upper seal protects the motor (oil lubricated), while the Lower seal handles the sewage.
• Friction Drive: The rubber bellow grips the shaft/sleeve to drive the rotary face, eliminating metal drive pins that can corrode in wastewater.
• Debris Shedding: The smooth, flexible outer profile of the rubber bellow prevents rags, hair, and fibers from winding around the seal (ragging).
• Axial Flexibility: The highly elastic bellow compensates for significant shaft end-play and misalignment, common in aging submersible pumps.
Technical Specs | Materials | ||
Mediums | Water, oil and weakly-corrosive mediums | Stationary Ring | Ceramic/Sic/TC |
Pressure | ≤1.4MPa | Rotary Ring | Carbon/Sic/TC |
Temperature | -20C to 120C | Secondary Seal | NBR/EPDM/Viton |
Speed | ≤15m/s | Spring and Metal Part | Stainless Steel |
Product Specifications
| D1 (inch) | Size Code | D1 (mm) | Size Code | D3 | D7 | L1 | L4 |
| 0.500 | 0127 | 12 | 0120 | 23.80 | 25.40 | 30.16 | 7.93 |
| 14 | 0140 | 27.76 | 31.75 | 33.32 | 10.30 | ||
| 0.625 | 0158 | 16 | 0160 | 27.76 | 31.75 | 33.32 | 10.30 |
| 0.750 | 0191 | 18 | 0180 | 30.94 | 34.93 | 33.32 | 10.30 |
| 20 | 0200 | 34.11 | 38.10 | 34.93 | 10.30 | ||
| 0.875 | 0222 | 22 | 0220 | 34.11 | 38.10 | 34.93 | 10.30 |
| 24 | 0240 | 38.10 | 41.28 | 39.67 | 11.10 | ||
| 1.000 | 0254 | 25 | 0250 | 38.10 | 41.28 | 39.67 | 11.10 |
| 1.125 | 0286 | 28 | 0280 | 41.28 | 44.44 | 41.28 | 11.10 |
| 30 | 0300 | 46.02 | 47.63 | 41.28 | 11.10 | ||
| 1.250 | 0317 | 32 | 0320 | 46.02 | 47.63 | 41.28 | 11.10 |
| 33 | 0330 | 48.68 | 50.80 | 42.85 | 11.10 | ||
| 1.375 | 0349 | 35 | 0350 | 48.68 | 50.80 | 42.85 | 11.10 |
| 1.500 | 0381 | 38 | 0380 | 51.85 | 53.98 | 42.85 | 11.10 |
| 1.625 | 0412 | 40 | 0400 | 58.10 | 60.38 | 50.80 | 12.70 |
| 43 | 0430 | 61.27 | 63.50 | 50.80 | 12.70 | ||
| 1.750 | 0444 | 45 | 0450 | 61.27 | 63.50 | 50.80 | 12.70 |
| 1.875 | 0476 | 48 | 0480 | 64.44 | 66.68 | 53.98 | 12.70 |
| 2.000 | 0508 | 50 | 0500 | 67.21 | 69.85 | 53.98 | 12.70 |
| 2.125 | 0539 | 53 | 0530 | 72.02 | 76.20 | 60.33 | 14.28 |
| 2.250 | 0571 | 55 | 0550 | 75.30 | 79.38 | 60.33 | 14.28 |
| 2.375 | 0603 | 60 | 0600 | 78.30 | 82.55 | 63.50 | 14.28 |
| 2.500 | 0635 | 63 | 0630 | 81.54 | 85.73 | 63.50 | 14.28 |
| 2.625 | 0666 | 65 | 0650 | 86.22 | 85.73 | 69.85 | 15.90 |
| 2.750 | 0698 | 70 | 0700 | 89.40 | 88.90 | 73.03 | 15.90 |
| 2.875 | 0730 | 73 | 0730 | 92.57 | 95.25 | 73.03 | 15.90 |
| 3.000 | 0762 | 75 | 0750 | 95.75 | 98.43 | 73.03 | 15.90 |
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 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
Municipal Lift Station: A city lift station overhauled ten Flygt 3102 pumps. Our flygt pump mechanical seals fit instantly into the plug-in housings. The pumps returned to service in 24 hours at 50% of the OEM repair cost.
Testimonials
We rebuild hundreds of Flygt pumps a year. These flygt mechanical seals are dimensionally exact and the rubber doesn't swell.
—Pump Repair Center, Sweden
FAQs
Q: Is glue required?
A: No! These are interference-fit seals. Use a lubricant (oil or soapy water) to press them into the chamber. Glue can damage the rubber and cause misalignment.
Q: Is this seal a direct replacement for my Flygt 2610/4610 series pump?
A: Yes, this 20mm Plug-in cartridge seal is designed as a direct form-fit-function replacement for the original Flygt seals used in models 2610, 2620, 2630, 2640, 4610, and 4620. It cross-references to common OEM part numbers like 769.94.30 (7699430) and matches the exact shaft diameter and cartridge length.
Q: How do I install the Plug-in seal correctly?
A: The Plug-in design is pre-set at the factory. Installation is simple: clean the shaft/sleeve, slide the cartridge onto the 20mm shaft, and secure it with the locking mechanism (varies by pump vintage). No special tools or face compression measurements are needed, making it ideal for field service
Our company is specialized in the production of sealing materials, mechanical seals , cartridge seals.
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