• Face Flatness Stability: Vertical pumps can have shaft runout; our Alumina Ceramic seats are lapped to extreme flatness to maintain a seal even with minor shaft wobble.
• Thermal Conductivity: High-purity alumina dissipates heat generated by dry-running incidents (common in tank emptying) better than lower grade ceramics.
Key Features
• Vertical Pump Specialist: Engineered for Alfa Laval (LKH series or similar) vertical or multi-stage pumps handling sanitary fluids.
• FDA Compliance: All wetted parts including the Alumina Ceramic and EPDM are FDA compliant for food and beverage contact.
• Sterile Design: The ceramic face is polished to a mirror finish (<0.1 Ra) to prevent bacterial adhesion and ensure cleanability.
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 | 20.0 | 21.0 | 5.0 | 15.0 | 27.5 | 35.0 |
| 12 | 0120 | 22.0 | 23.0 | 6.0 | 15.0 | 26.5 | 34.0 |
| 14 | 0140 | 24.0 | 25.0 | 6.0 | 15.0 | 29.0 | 34.0 |
| 15 | 0150 | 25.0 | 26.0 | 6.0 | 15.0 | 29.0 | 34.0 |
| 16 | 0160 | 26.0 | 27.0 | 6.0 | 15.0 | 29.0 | 34.0 |
| 18 | 0180 | 32.0 | 33.0 | 6.0 | 20.0 | 31.5 | 39.0 |
| 20 | 0200 | 34.0 | 35.0 | 6.0 | 20.0 | 31.5 | 39.0 |
| 22 | 0220 | 36.0 | 37.0 | 6.0 | 20.0 | 31.5 | 39.0 |
| 24 | 0240 | 38.0 | 39.0 | 6.0 | 20.0 | 34.0 | 44.0 |
| 25 | 0250 | 39.0 | 40.0 | 6.0 | 20.0 | 34.0 | 44.0 |
| 28 | 0280 | 42.0 | 43.0 | 6.0 | 26.0 | 36.5 | 44.0 |
| 30 | 0300 | 44.0 | 45.0 | 7.0 | 26.0 | 35.5 | 43.0 |
| 32 | 0320 | 46.0 | 48.0 | 7.0 | 26.0 | 35.5 | 48.0 |
| 33 | 0330 | 47.0 | 48.0 | 7.0 | 26.0 | 35.5 | 48.0 |
| 35 | 0350 | 49.0 | 50.0 | 8.0 | 26.0 | 34.5 | 47.0 |
| 38 | 0380 | 54.0 | 56.0 | 8.0 | 30.0 | 37.0 | 47.0 |
| 40 | 0400 | 56.0 | 58.0 | 8.0 | 30.0 | 37.0 | 47.0 |
| 43 | 0430 | 59.0 | 61.0 | 8.0 | 30.0 | 37.0 | 52.0 |
| 45 | 0450 | 61.0 | 63.0 | 8.0 | 30.0 | 37.0 | 52.0 |
| 48 | 0480 | 64.0 | 66.0 | 10.0 | 30.0 | 35.0 | 50.0 |
| 50 | 0500 | 66.0 | 70.0 | 10.0 | 30.0 | 37.5 | 50.0 |
| 53 | 0530 | 69.0 | 73.0 | 10.0 | 30.0 | 37.5 | 60.0 |
| 55 | 0550 | 71.0 | 75.0 | 10.0 | 30.0 | 37.5 | 60.0 |
| 58 | 0580 | 78.0 | 78.0 | 10.0 | 33.0 | 42.5 | 60.0 |
| 60 | 0600 | 80.0 | 80.0 | 12.0 | 33.0 | 40.5 | 58.0 |
| 63 | 0630 | 83.0 | 83.0 | 12.0 | 33.0 | 40.5 | 58.0 |
| 65 | 0650 | 85.0 | 85.0 | 12.0 | 33.0 | 40.5 | 68.0 |
| 68 | 0680 | 88.0 | 90.0 | 12.0 | 33.0 | 40.5 | 68.0 |
| 70 | 0700 | 90.0 | 92.0 | 12.0 | 33.0 | 48.0 | 68.0 |
| 75 | 0750 | 99.0 | 97.0 | 12.0 | 40.0 | 48.0 | 68.0 |
| 80 | 0800 | 104.0 | 105.0 | 12.5 | 40.0 | 47.5 | 77.5 |
| 85 | 0850 | 109.0 | 110.0 | 12.5 | 40.0 | 47.5 | 77.5 |
| 90 | 0900 | 114.0 | 115.0 | 12.5 | 40.0 | 52.5 | 77.5 |
| 95 | 0950 | 119.0 | 120.0 | 12.5 | 40.0 | 52.5 | 77.5 |
| 100 | 1000 | 124.0 | 125.0 | 12.5 | 40.0 | 52.5 | 77.5 |
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
Dairy Pasteurizer: A vertical booster pump in a milk pasteurization line needed a seal replacement. We provided this FDA Alumina/Carbon seal. It handled the thermal shock of hot milk and cold cleaning cycles without cracking.
Testimonials
We use these in our Alfa Laval LKH pumps. They clean up perfectly during CIP and the ceramic doesn't pit from the acid wash.
—Plant Manager, Dairy Facility
FAQs about Metal Bellows Seals for High Temperature Pumps
Q: Does this fit Alfa Laval LKH pumps?
A: Yes, we have specific models designed to replace the single and double seals found in the LKH pump range. Please verify your shaft size and seal kit part number.
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
