• Modular Upgrade: Can often replace a single seal in the same pump housing (with the addition of flush piping), upgrading the pump to handle more difficult fluids like sugar syrup or glue.
• Robust Drive: Features a strong drive mechanism to handle the viscous drag often associated with fluids requiring double seals.
Key Features
• Flushed Seal Design: A replacement for the double-flushed seal arrangement found on Alfa Laval LKH and SRU pumps handling sticky, crystallizing, or high-temperature fluids.
• Barrier Fluid Protection: Designed to run with a low-pressure water flush (Plan 52/54) that lubricates the faces and creates a barrier against the process media.
• Prevents Dry Running: The flush ensures the seal faces are always wet, even if the pump runs dry during tank emptying, protecting the seal from heat damage.
Technical Specs | Materials | ||
Mediums | Water, oil and weakly-corrosive mediums | Stationary Ring | Ceramic/Sic/TC |
Pressure | ≤1.0MPa | 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
| Metric Shaft Size D1 | Size Code | D3 | D7 | L1 | L4 |
| 14 | 0140 | 27.50 | 30.00 | 18.70 | 5.00 |
| 16 | 0160 | 28.50 | 32.00 | 21.00 | 5.00 |
| 18 | 0180 | 31.20 | 35.00 | 22.50 | 7.50 |
| 20 | 0200 | 31.70 | 35.00 | 21.00 | 8.00 |
| 24 | 0240 | 40.20 | 39.00 | 25.50 | 8.00 |
| 25 | 0250 | 40.20 | 40.00 | 25.50 | 8.00 |
| 28 | 0280 | 44.10 | 43.00 | 25.50 | 8.00 |
| 30 | 0300 | 45.10 | 45.00 | 25.50 | 9.00 |
| 32 | 0320 | 49.00 | 48.00 | 33.50 | 9.00 |
| 33 | 0330 | 49.00 | 48.00 | 33.50 | 9.00 |
| 35 | 0350 | 50.20 | 50.00 | 33.50 | 9.00 |
| 38 | 0380 | 55.30 | 56.00 | 33.50 | 9.00 |
| 40 | 0400 | 57.00 | 58.00 | 33.50 | 9.00 |
| 43 | 0430 | 60.70 | 61.00 | 36.50 | 9.50 |
| 45 | 0450 | 62.50 | 63.00 | 38.00 | 9.50 |
| 48 | 0480 | 66.50 | 66.00 | 38.00 | 9.50 |
| 50 | 0500 | 68.60 | 70.00 | 38.00 | 9.50 |
| 53 | 0530 | 70.80 | 73.00 | 41.00 | 9.50 |
| 55 | 0550 | 72.40 | 75.00 | 41.00 | 9.50 |
| 58 | 0580 | 80.00 | 78.00 | 42.00 | 9.50 |
| 60 | 0600 | 83.00 | 80.00 | 42.00 | 9.50 |
| 65 | 0650 | 87.20 | 85.00 | 43.00 | 10.00 |
| 70 | 0700 | 91.60 | 92.00 | 45.00 | 11.00 |
| 75 | 0750 | 99.40 | 97.00 | 48.00 | 12.00 |
| 80 | 0800 | 104.60 | 104.00 | 55.00 | 12.00 |
| 85 | 0850 | 111.00 | 109.00 | 64.20 | 12.00 |
| 90 | 0900 | 113.00 | 114.00 | 66.20 | 12.00 |
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
Syrup Transfer: A beverage plant's single seals were failing due to sugar crystallization on the faces. We upgraded them to this Double Acting Seal with a water flush. The water barrier dissolved any sugar crystals, extending seal life from 3 months to over 2 years.
Testimonials
We use these flushed seals on our glucose lines. The water flush keeps everything clean and cool. Essential for our process.
—Process Engineer, Soft Drink Manufacturer
FAQs about Metal Bellows Seals for High Temperature Pumps
Q: Do I need a flush system?
A: Yes, this double seal requires a continuous supply of clean flush water (or compatible barrier fluid). Running it without flush fluid will cause the outboard faces to overheat and fail.
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
