• 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.
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.
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 Rubber Bellow 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 rubber bellow seals are dimensionally exact and the rubber doesn't swell.
—Pump Repair Center, Sweden
FAQs about Metal Bellows Seals for High Temperature Pumps
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.
Our company is specialized in the production of sealing materials, mechanical seals , cartridge seals.
E-mail: gechacha@aliyun.com
Mobile: +86-18758835650
WhatsApp: +86-18758835650
Add: No8-2, Jinsha road Yuelin Street, Fenghua District, Ningbo, Zhejiang
