Replacement Brand: Alfa Laval mechanical seal
Specification: MG1&MG9&MG12&MG13
Temperature: high temperature mechanical seal
Balance: Unbalanced
Type: Multi-Spring
Accreditation: ISO, SGS, UL, ROHS
Service: OEM/ODM
Origin: China
This rubber mechanical seal is supplied as a replacement rubber seal for Alfa Laval Tullu pump and compatible LKH-type sanitary centrifugal pumps, also fitting compact Tullu pump seal applications for domestic water duties. Our Alfa Laval rubber mechanical seal for Tullu pump uses a universal elastomer bellow (NBR standard, FDA EPDM or Viton optional) with open-coil spring to resist clogging in lightly turbid fluids. Available as a standalone rubber mechanical seal or as a complete Alfa Laval Tullu pump seal kit (with rubber O-rings), including shaft O-ring, seat gasket, and optional secondary seals. An O-ring set for Alfa Laval Tullu pump mechanical seal is also available separately for maintenance teams standardizing spares across Alfa Laval process loops and Tullu washdown pumps.
Key Features
• Versatile Rubber Bellow: A universal elastomer bellow rubber mechanical seal designed to fit sanitary Alfa Laval centrifugal pumps and compact Tullu water pumps—one design covers both with correct sizing and material selection.
• Sanitary & Utility Compatible: Supplied with FDA-compliant EPDM for Alfa Laval pump mechanical seal sanitary loops (dairy/beverage/pharma) or robust NBR for general Tullu pump seal water duties—simplifies spare part inventory.
• Compact & Reliable: Single coil spring and elastomer bellow provide dependable sealing in minimal axial space, making this a practical replacement rubber seal for Alfa Laval Tullu pump on small-to-mid frame pumps.
• Non-Clogging: Open coil spring design resists debris accumulation, keeping the Alfa Laval rubber mechanical seal for Tullu pump functional in slightly turbid domestic or CIP return water.
• Shaft Protection: The rubber bellow covers the shaft, preventing corrosion and eliminating the need for separate shaft sleeves on smaller Tullu pumps fitted with this rubber mechanical seal.
OEM Cross Reference
Common OEM O-Ring / Seal References for Alfa Laval Tullu / LKH Pumps:
O-ring replacements compatible with Alfa Laval OEM Nos. 561022-xxxx(shaft O-ring), 561023-xxxx(seat gasket)
Mechanical seal equivalents to Alfa Laval 961029-xxxseries (when ordered with rubber bellow)
Part numbers shown for cross-reference only. Components are MIAOYU replacements.
Rubber Mechanical Seal Technical Specs | Materials | ||
Mediums | Water, oil and weakly-corrosive mediums | Stationary Ring | Ceramic/Sic/TC |
Pressure | ≤1.2MPa | Rotary Ring | Carbon/Sic/TC |
Temperature | -20℃ to 120℃ | Secondary Seal | NBR/EPDM/Viton |
Speed | ≤12m/s | Spring and Metal Part | Stainless Steel |
Product Specifications
| D1 (mm) | Size Code | D3 | D7 | L4 | L1 | L11 | L12 |
| 10 | 0100 | 22.50 | 21.00 | 6.60 | 14.50 | 25.90 | 33.40 |
| 12 | 0120 | 25.00 | 23.00 | 6.60 | 15.00 | 25.90 | 33.40 |
| 14 | 0140 | 28.50 | 25.00 | 6.60 | 17.00 | 28.40 | 33.40 |
| 15 | 0150 | 28.50 | 27.00 | 6.60 | 17.00 | 28.40 | 33.40 |
| 16 | 0160 | 28.50 | 27.00 | 6.60 | 17.00 | 28.40 | 33.40 |
| 18 | 0180 | 32.00 | 33.00 | 7.50 | 19.50 | 30.00 | 37.50 |
| 20 | 0200 | 37.00 | 35.00 | 7.50 | 21.50 | 30.00 | 37.50 |
| 22 | 0220 | 37.00 | 37.00 | 7.50 | 21.50 | 30.00 | 37.50 |
| 24 | 0240 | 42.50 | 39.00 | 7.50 | 22.50 | 32.50 | 42.50 |
| 25 | 0250 | 42.50 | 40.00 | 7.50 | 23.00 | 32.50 | 42.50 |
| 28 | 0280 | 49.00 | 43.00 | 7.50 | 26.50 | 35.00 | 42.50 |
| 30 | 0300 | 49.00 | 45.00 | 7.50 | 26.50 | 35.00 | 42.50 |
| 32 | 0320 | 53.50 | 48.00 | 7.50 | 27.50 | 35.00 | 47.50 |
| 33 | 0330 | 53.50 | 48.00 | 7.50 | 27.50 | 35.00 | 47.50 |
| 35 | 0350 | 57.00 | 50.00 | 7.50 | 28.50 | 35.00 | 47.50 |
| 38 | 0380 | 59.00 | 56.00 | 9.00 | 30.00 | 36.00 | 46.00 |
| 40 | 0400 | 62.00 | 58.00 | 9.00 | 30.00 | 36.00 | 46.00 |
| 43 | 0430 | 65.50 | 61.00 | 9.00 | 30.00 | 36.00 | 51.00 |
| 45 | 0450 | 68.00 | 63.00 | 9.00 | 30.00 | 36.00 | 51.00 |
| 48 | 0480 | 70.50 | 66.00 | 9.00 | 30.50 | 36.00 | 51.00 |
| 50 | 0500 | 74.00 | 70.00 | 9.50 | 30.50 | 38.00 | 50.50 |
| 53 | 0530 | 78.50 | 73.00 | 11.00 | 33.00 | 36.50 | 59.00 |
| 55 | 0550 | 81.00 | 75.00 | 11.00 | 35.00 | 36.50 | 59.00 |
| 58 | 0580 | 85.50 | 78.00 | 11.00 | 37.00 | 41.50 | 59.00 |
| 60 | 0600 | 88.80 | 80.00 | 11.00 | 38.00 | 41.50 | 59.00 |
| 65 | 0650 | 93.50 | 85.00 | 11.00 | 40.00 | 41.50 | 69.00 |
| 68 | 0680 | 96.50 | 90.00 | 11.30 | 40.00 | 41.20 | 68.70 |
| 70 | 0700 | 99.50 | 92.00 | 11.30 | 40.00 | 48.70 | 68.70 |
| 75 | 0750 | 107.00 | 97.00 | 11.30 | 40.00 | 48.00 | 68.70 |
| 80 | 0800 | 112.00 | 105.00 | 12.00 | 40.00 | 48.00 | 78.00 |
| 85 | 0850 | 120.00 | 110.00 | 14.00 | 41.00 | 46.00 | 76.00 |
| 90 | 0900 | 127.00 | 115.00 | 14.00 | 45.00 | 51.00 | 76.00 |
| 95 | 0950 | 132.00 | 120.00 | 14.00 | 46.00 | 51.00 | 76.00 |
| 100 | 1000 | 137.00 | 125.00 | 14.00 | 47.00 | 51.00 | 76.00 |
Workshop
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
Food Processing & Utility: A facility used Alfa Laval pumps for process and Tullu pumps for washdown. We standardized their inventory with this versatile rubber mechanical seal design (changing materials as needed). It simplified stock and reduced confusion.
Testimonials
Fits our little Tullu pumps perfectly and we use the FDA version for our sanitary loop backup pumps. Very versatile." — Maintenance Lead, Beverage Plant
FAQs about Rubber Mechanical Seals for Tullu Pumps
Q: Does this rubber mechanical seal fit both Alfa Laval LKH pumps and Indian Tullu pumps?
A: Yes. The elastomer bellow design is the same principle. We supply the correct Alfa Laval rubber mechanical seal for Tullu pump size (shaft diameter) and material grade (FDA EPDM for Alfa Laval sanitary loops; NBR for Tullu utility water pumps).
Q: What is included in the Alfa Laval Tullu pump seal kit (with rubber O-rings)?
A: The Alfa Laval Tullu pump seal kit (with rubber O-rings) includes the rubber bellow mechanical seal, shaft O-ring, stationary seat gasket, and installation lubricant—everything needed for one complete seal change-out.
Q: Can I order just the O-ring set for Alfa Laval Tullu pump mechanical seal?
A: Yes. We supply the O-ring set for Alfa Laval Tullu pump mechanical sealseparately (shaft O-ring + seat gasket) in EPDM, Viton (FKM), or NBR to match your existing seal.
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
