• Non-Clogging Spring: The large single coil spring resists fouling from deposits, making it reliable in hard water or light slurries.
• Shaft Protection: The bellow covers the shaft area under the seal, preventing corrosion and fretting wear.
Key Features
• Short Working Length: A compact version of the Type 1, the Type 2 is designed for pumps with limited stuffing box depth.
• Positive Drive: Uses the same reliable elastomer bellow drive principle as the Type 1 but in a space-saving package.
• Cost-Effective: An economical solution for high-volume OEM water pumps and domestic appliances.
Technical Specs | Materials | ||
Mediums | Water, oil and weakly-corrosive mediums | Stationary Ring | Ceramic/Sic/TC |
Pressure | ≤1.4MPa | 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 |
| 16 | 0160 | 34.00 | 30.00 | 25.20 | 8.00 |
| 18 | 0180 | 36.80 | 32.00 | 25.20 | 8.00 |
| 20 | 0200 | 38.80 | 34.00 | 25.20 | 8.00 |
| 22 | 0220 | 41.50 | 36.00 | 25.20 | 8.00 |
| 25 | 0250 | 44.80 | 39.00 | 26.20 | 8.00 |
| 28 | 0280 | 48.50 | 43.00 | 26.20 | 8.00 |
| 30 | 0300 | 52.00 | 48.00 | 26.20 | 8.00 |
| 35 | 0350 | 57.00 | 53.00 | 30.20 | 10.00 |
| 40 | 0400 | 67.00 | 58.00 | 34.20 | 10.00 |
| 45 | 0450 | 73.00 | 63.00 | 36.20 | 10.00 |
| 50 | 0500 | 79.00 | 68.00 | 41.20 | 10.00 |
| 55 | 0550 | 84.00 | 73.00 | 41.20 | 12.00 |
| 60 | 0600 | 90.00 | 79.00 | 41.20 | 12.00 |
| 65 | 0650 | 98.50 | 86.00 | 49.20 | 12.00 |
| 70 | 0700 | 103.50 | 91.00 | 52.20 | 12.00 |
| 75 | 0750 | 110.50 | 96.00 | 52.20 | 12.00 |
| 80 | 0800 | 120.00 | 105.00 | 56.20 | 14.00 |
| 85 | 0850 | 125.00 | 110.00 | 56.20 | 14.00 |
| 90 | 0900 | 132.00 | 115.00 | 56.20 | 14.00 |
| 95 | 0950 | 137.00 | 120.00 | 56.20 | 14.00 |
| 100 | 1000 | 144.00 | 125.00 | 62.20 | 14.00 |
| 110 | 1100 | 157.00 | 135.00 | 62.20 | 16.00 |
| 120 | 1200 | 169.50 | 145.00 | 72.20 | 16.00 |
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
Heating Systems: A district heating provider needed a short seal for older circulation pumps. The Type 1 was too long. Our Type 2 fit perfectly, restoring the pumps to service without machining the housing.
Testimonials
Hard to find these short Type 2 seals anymore. Glad you stock them. They save us from replacing the whole pump.
—HVAC Technician, NYC
FAQs about Metal Bellows Seals for High Temperature Pumps
Q: How do I distinguish Type 1 from Type 2?
A: The main difference is the installed working length. Type 2 is significantly shorter. Measure the distance from the face to the back of the spring to confirm.
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
