60mm Mechanical Seal for Flygt pump 5100.300 5100.310 5150 3202 4670 4680
The 60mm Flygt mechanical seal is a heavy-duty Plug-in cartridge seal engineered as a direct OEM replacement for large Flygt submersible pumps including models 5100.300, 5100.310, 5150, 3202, 4670, and 4680. This double-seal unit (motor side + impeller side) features a robust Tungsten Carbide (TC) face combination and Viton (FKM) elastomers housed in a stainless steel cartridge. Designed for 60mm shafts, it delivers reliable performance in demanding applications such as raw sewage, abrasive slurries, and industrial wastewater, ensuring maximum motor protection and extended pump life.
Key Features
• Upper Seal Standard: Ideal for the "Upper" seal position (Inner seal) in Flygt pumps, which operates in a clean oil bath environment protecting the motor.
• Cost-Effective: Alumina Ceramic paired with Carbon provides excellent sealing for clean oil at a much lower cost than Tungsten Carbide.
• Exact Plug-in Fit: Precision-machined to match the exact dimensions and locking mechanism of original Flygt 60mm cartridge seals (e.g., referencing OEM part 6313730). Ensures a drop-in replacement without modification for models 3202, 4670, 4680, 5100.300, 5100.310, 5150.300, and 5150.310.
• Pre-Assembled Cartridge Convenience: The double-seal cartridge comes pre-set and pre-assembled from the factory. This eliminates complex field assembly, reduces installation time, and minimizes the risk of human error during pump rebuilds.
• Cost-Effective Performance: Delivers OEM-equivalent sealing performance and service life at a significantly lower total cost of ownership, reducing maintenance budgets for municipal water treatment and industrial operations.
Technical Specs | Materials | ||
Mediums | Water, oil and weakly-corrosive mediums | Stationary Ring | Ceramic/Sic/TC |
Pressure | ≤1.4MPa | 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 (inch) | Size Code | D1 (mm) | Size Code | D3 | D7 | L1 | L4 |
| 0.500 | 0127 | 12 | 0120 | 25.00 | 27.79 | 44.00 | 8.74 |
| 14 | 0140 | 29.00 | 30.95 | 44.00 | 10.32 | ||
| 0.625 | 0158 | 16 | 0160 | 29.00 | 30.95 | 44.00 | 10.32 |
| 0.750 | 0191 | 18 | 0180 | 32.00 | 34.15 | 44.00 | 10.32 |
| 20 | 0200 | 33.00 | 35.70 | 44.00 | 10.32 | ||
| 0.875 | 0222 | 22 | 0220 | 35.00 | 37.30 | 44.00 | 10.32 |
| 24 | 0240 | 38.00 | 40.50 | 44.00 | 10.32 | ||
| 1.000 | 0254 | 25 | 0250 | 38.00 | 40.50 | 44.00 | 10.32 |
| 1.125 | 0286 | 28 | 0280 | 46.00 | 47.63 | 60.00 | 11.99 |
| 30 | 0300 | 49.00 | 50.80 | 60.00 | 11.99 | ||
| 1.250 | 0317 | 32 | 0320 | 49.00 | 50.80 | 60.00 | 11.99 |
| 33 | 0330 | 52.00 | 53.98 | 60.00 | 11.99 | ||
| 1.375 | 0349 | 35 | 0350 | 52.00 | 53.98 | 60.00 | 11.99 |
| 1.500 | 0381 | 38 | 0380 | 56.00 | 57.15 | 60.00 | 11.99 |
| 1.625 | 0412 | 40 | 0400 | 59.00 | 60.35 | 60.00 | 11.99 |
| 43 | 0430 | 62.00 | 63.50 | 71.00 | 11.99 | ||
| 1.750 | 0444 | 45 | 0450 | 62.00 | 63.50 | 71.00 | 11.99 |
| 1.875 | 0476 | 48 | 0480 | 65.00 | 66.70 | 71.00 | 11.99 |
| 2.000 | 0508 | 50 | 0500 | 68.00 | 69.85 | 71.00 | 13.50 |
| 2.125 | 0539 | 53 | 0530 | 71.00 | 73.05 | 71.00 | 13.50 |
| 2.250 | 0571 | 55 | 0550 | 75.00 | 76.20 | 71.00 | 13.50 |
| 2.375 | 0603 | 60 | 0600 | 78.00 | 79.40 | 71.00 | 13.50 |
| 2.500 | 0635 | 63 | 0630 | 81.00 | 82.55 | 71.00 | 13.50 |
| 2.625 | 0666 | 65 | 0650 | 86.00 | 92.10 | 71.00 | 15.90 |
| 2.750 | 0698 | 70 | 0700 | 89.00 | 95.25 | 70.00 | 15.90 |
| 2.875 | 0730 | 73 | 0730 | 92.00 | 98.45 | 73.00 | 15.90 |
| 3.000 | 0762 | 75 | 0750 | 95.00 | 101.65 | 73.00 | 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 Flygt 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
Pump Rental Fleet: A rental company needed to refurbish their fleet. Using Ceramic/Carbon seals for the upper position saved 40% on overhaul costs without compromising the pump's primary defense (the lower seal).
Testimonials
For the upper seal in the oil chamber, there's no need for expensive carbide. These ceramic seals work perfectly.
—Workshop Manager, Australia
FAQs
Q: Can I use this as the lower seal?
A: We do not recommend it for sewage. Ceramic is brittle and can crack if a rock hits the impeller. Always use Tungsten Carbide or SiC for the lower (process-side) seal.
Q: Is this seal compatible with my Flygt 5100.300 and 5150 pumps?
A: Yes, this 60mm Plug-in cartridge seal is designed as a direct form-fit-function replacement for Flygt 5100.300, 5100.310, 5150.300, 5150.310, as well as 3202, 4670, and 4680 series pumps. It matches the original shaft diameter (60mm) and cartridge length.
Q: How do I install the 60mm Plug-in seal?
A: The Plug-in design is pre-set at the factory. Installation is simple: clean the 60mm shaft/sleeve, slide the cartridge onto the 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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