The tungsten carbide grundfos wave spring mechanical seal is a premium, heavy-duty replacement engineered specifically for Grundfos CR, CRI, CRN, TP, NB, and NK series vertical multistage pumps. This OEM-compatible seal features a robust Tungsten Carbide (TC) vs. Tungsten Carbide face combination, delivering exceptional resistance to abrasion, thermal shock, and high pressure.
Key Features
• Grundfos Replacement: A robust replacement for Grundfos pumps using wave spring seals (e.g., TP, NB, NK series).
• Heavy-Duty Faces: Wave spring mechanical seals are standard, designed to handle the high pressure and vibration of large vertical inline pumps.
• Compact Wave Spring: The wave spring design reduces the axial length, allowing for a compact seal chamber while providing high closing force.
• Non-Clogging Spring: The wave spring's open structure is less prone to clogging with lime or scale compared to coil springs.
• Torque Drive: Features robust drive pins to transmit torque from the shaft to the wave spring mechanical seal face, preventing slippage under high loads.
Company Advantages
Certified Material Sourcing: Miaoyu Seals utilizes premium-grade, vacuum-sintered tungsten carbide from certified suppliers, ensuring consistent density and hardness (HRA ≥ 90) for maximum seal life, backed by ISO 9001:2015 quality control.
Precision Wave Spring Manufacturing: Our proprietary manufacturing process for wave springs ensures uniform force distribution and eliminates stress points, a critical factor for the reliability of this compact seal design.
OEM Interchangeability Expertise: With over 30 years of experience in reverse engineering, Miaoyu produces wave spring mechanical seals with exact dimensional tolerances to match Grundfos shaft diameters (12mm, 16mm, 22mm, 32mm, etc.) and housing fits, ensuring zero modification during installation.
Global Compliance & Certifications: Our production adheres to international standards, holding CE, RoHS, and REACH certifications, and our wave spring mechanical seals are tested to perform equivalently to original Grundfos parts in demanding conditions.
High-Volume Production Capacity: With a 4000+ ㎡ manufacturing base, Miaoyu maintains large stock levels of popular Grundfos replacement seals, offering competitive factory-direct prices and fast delivery to over 50 countries.
Wave Spring Mechanical Seal Technical Specs | Materials | ||
Pressure | ≤ 1.0MPa | Stationary Ring | Ceramic/Sic/TC |
Rotary Ring | Carbon/Sic/TC | ||
Temperature | -20°C to 120°C | Secondary Seal | NBR/EPDM/Viton |
Speed | ≤ 15 m/s | Spring and Metal Part | Stainless Steel |
Product Specifications
| D1 (inch) | Size Code | D3 | D7 | L4 | L1 | L11 |
| 0.500 | 0127 | 23.90 | 25.40 | 7.93 | 20.62 | 31.75 |
| 0.625 | 0158 | 26.70 | 31.75 | 10.28 | 22.22 | 34.93 |
| 0.750 | 0191 | 31.10 | 34.93 | 10.28 | 22.22 | 34.93 |
| 0.875 | 0222 | 33.40 | 38.10 | 10.28 | 23.80 | 36.50 |
| 1.000 | 0254 | 43.20 | 41.28 | 11.10 | 25.40 | 41.28 |
| 1.125 | 0286 | 46.30 | 44.44 | 11.10 | 26.97 | 42.85 |
| 1.250 | 0317 | 49.40 | 47.63 | 11.10 | 26.97 | 42.85 |
| 1.375 | 0349 | 52.60 | 50.80 | 11.10 | 28.58 | 42.85 |
| 1.500 | 0381 | 55.80 | 53.98 | 11.10 | 28.58 | 42.85 |
| 1.625 | 0412 | 62.20 | 60.33 | 12.70 | 34.93 | 50.80 |
| 1.750 | 0444 | 66.00 | 63.50 | 12.70 | 34.93 | 50.80 |
| 1.875 | 0476 | 66.60 | 66.68 | 12.70 | 38.10 | 53.98 |
| 2.000 | 0508 | 73.00 | 69.85 | 12.70 | 38.10 | 53.98 |
| 2.125 | 0539 | 73.30 | 76.20 | 14.28 | 42.88 | 60.32 |
| 2.250 | 0571 | 78.40 | 79.38 | 14.28 | 42.88 | 60.32 |
| 2.375 | 0603 | 82.00 | 82.55 | 14.28 | 46.02 | 63.50 |
| 2.500 | 0635 | 84.90 | 85.73 | 14.28 | 46.02 | 63.50 |
| 2.625 | 0666 | 88.40 | 85.73 | 15.90 | 49.20 | 69.85 |
| 2.750 | 0698 | 92.60 | 88.90 | 15.90 | 49.20 | 69.85 |
| 2.875 | 0730 | 94.85 | 95.25 | 15.90 | 52.37 | 73.03 |
| 3.000 | 0762 | 101.90 | 98.43 | 15.90 | 52.37 | 73.03 |
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 about wave spring mechanical seal, 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 wave spring 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
District Heating: Large Grundfos TP pumps in a heating plant were leaking due to scale buildup on the seal faces. We installed TC/TC wave spring mechanical seals. The hard faces crushed the scale, and the wave spring resisted clogging, ensuring reliable winter operation.
Testimonials
A heavy-duty alternative to the standard BAQE seal. The TC faces last forever in our heating loops.
—Facilities Manager, Hospital
FAQs
Q: Is this a balanced seal?
A: Yes, most wave spring mechanical seals for these large pumps are hydraulically balanced to handle system pressures up to 25 bar without overheating.
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
