• Integrated Cartridge Design: Eliminates installation deviation common in small component seals.
• Optimized Spring Pressure: Spring force is calibrated specifically for softer carbon faces to ensure seal integrity without excessive wear.
Key Features
• Plug-and-Play Small Bore Solution: Standardized for 20mm and 22mm shaft sizes, eliminating installation difficulties in tight pump spaces.
• Superior Dry-Run Protection: Carbon graphite faces withstand dry starts and marginal lubrication better than hard faces.
• Cost-Effective Inventory Option: A high turnover inventory item designed for mass-market utility pumps.
Technical Specs | Materials | ||
Mediums | Chemical, Food, Oil, Petroleum, Pharmaceuticals Paper and pulp, Sewage treatment | Stationary Ring | Carbon/Sic/Ssic/TC |
Temperature | Elastomer Dependent | Rotary Ring | Sic/Ssic/TC |
Pressure | ≤2.8MPa | Secondary Seal | Viton/EPDM/Chemraz/Kalrez/Aflas, etc. |
Speed | ≤35m/s | Spring and Metal Part | Stainless Steel/Hast C |
Product Specifications
| D1 (mm) | D2 | D3 | D5 | L1 | L2 | L3 | L5 |
| 25 | 43.5 | 104 | 12.5 | 19 | 48 | 25 | 62 |
| 28 | 46.5 | 104 | 12.5 | 19 | 48 | 25 | 62 |
| 30 | 48.5 | 104 | 12.5 | 19 | 48 | 25 | 67 |
| 32 | 50.5 | 104 | 12.5 | 19 | 48 | 25 | 67 |
| 33 | 50.5 | 104 | 12.5 | 19 | 48 | 25 | 67 |
| 35 | 53.5 | 110 | 12.5 | 19 | 48 | 25 | 70 |
| 38 | 56.5 | 125 | 14.7 | 19 | 48 | 25 | 75 |
| 40 | 58.5 | 125 | 14.7 | 19 | 48 | 25 | 75 |
| 42 | 60.5 | 133 | 14.7 | 19 | 48 | 25 | 80 |
| 43 | 61.5 | 133 | 14.7 | 19 | 48 | 25 | 80 |
| 45 | 63.5 | 140 | 14.7 | 19 | 48 | 25 | 82 |
| 48 | 66.5 | 140 | 14.7 | 19 | 48 | 25 | 82 |
| 50 | 68.5 | 140 | 14.7 | 19 | 48 | 25 | 87 |
| 53 | 71.5 | 150 | 17.5 | 19 | 48 | 25 | 92 |
| 55 | 73.5 | 150 | 17.5 | 19 | 48 | 25 | 92 |
| 60 | 78.5 | 160 | 17.5 | 19 | 48 | 25 | 100 |
| 65 | 83.5 | 165 | 17.5 | 19 | 48 | 25 | 105 |
| 70 | 88.5 | 180 | 17.5 | 19 | 48 | 25 | 120 |
| 75 | 100 | 190 | 17.5 | 20.5 | 51.5 | 30 | 125 |
| 80 | 105 | 190 | 17.5 | 20.5 | 51.5 | 30 | 130 |
| 85 | 110 | 220 | 21.5 | 20.5 | 51.5 | 30 | 135 |
| 90 | 115 | 220 | 21.5 | 20.5 | 51.5 | 30 | 140 |
| 95 | 120 | 220 | 21.5 | 20.5 | 51.5 | 30 | 145 |
| 100 | 125 | 220 | 21.5 | 20.5 | 51.5 | 30 | 150 |
| D1 (inch) | D2 | D3 | D5 | L1 | L2 | L3 | L5 |
| 1.000 | 1.713 | 4.094 | 0.492 | 0.748 | 1.890 | 0.984 | 2.441 |
| 1.125 | 1.831 | 4.094 | 0.492 | 0.748 | 1.890 | 0.984 | 2.441 |
| 1.250 | 1.988 | 4.094 | 0.492 | 0.748 | 1.890 | 0.984 | 2.638 |
| 1.375 | 2.107 | 4.331 | 0.492 | 0.748 | 1.890 | 0.984 | 2.756 |
| 1.500 | 2.225 | 4.921 | 0.579 | 0.748 | 1.890 | 0.984 | 2.953 |
| 1.625 | 2.382 | 5.236 | 0.579 | 0.748 | 1.890 | 0.984 | 3.150 |
| 1.750 | 2.500 | 5.512 | 0.579 | 0.748 | 1.890 | 0.984 | 3.228 |
| 1.875 | 2.618 | 5.512 | 0.579 | 0.748 | 1.890 | 0.984 | 3.228 |
| 2.000 | 2.697 | 5.906 | 0.579 | 0.748 | 1.890 | 0.984 | 3.425 |
| 2.125 | 2.815 | 6.102 | 0.689 | 0.748 | 1.890 | 0.984 | 3.622 |
| 2.250 | 3.012 | 6.299 | 0.689 | 0.748 | 1.890 | 0.984 | 3.937 |
| 2.375 | 3.091 | 6.469 | 0.689 | 0.748 | 1.890 | 0.984 | 3.937 |
| 2.500 | 3.209 | 6.693 | 0.689 | 0.748 | 1.890 | 0.984 | 4.055 |
| 2.625 | 3.406 | 7.067 | 0.689 | 0.748 | 1.890 | 0.984 | 4.724 |
| 2.750 | 3.484 | 7.480 | 0.689 | 0.748 | 1.890 | 0.984 | 4.724 |
| 2.875 | 3.858 | 7.480 | 0.689 | 0.807 | 2.027 | 1.181 | 4.843 |
| 3.000 | 3.937 | 7.480 | 0.689 | 0.807 | 2.027 | 1.181 | 4.921 |
| 3.125 | 4.134 | 8.661 | 0.689 | 0.807 | 2.027 | 1.181 | 5.118 |
| 3.250 | 4.252 | 8.661 | 0.846 | 0.807 | 2.027 | 1.181 | 5.236 |
| 3.375 | 4.331 | 8.661 | 0.846 | 0.807 | 2.027 | 1.181 | 5.315 |
| 3.500 | 4.528 | 8.661 | 0.846 | 0.807 | 2.027 | 1.181 | 5.512 |
| 3.625 | 4.606 | 8.661 | 0.846 | 0.807 | 2.027 | 1.181 | 5.591 |
| 3.750 | 4.725 | 8.661 | 0.846 | 0.807 | 2.027 | 1.181 | 5.709 |
| 3.875 | 4.921 | 8.661 | 0.846 | 0.807 | 2.027 | 1.181 | 5.906 |
| 4.000 | 4.921 | 8.661 | 0.846 | 0.807 | 2.027 | 1.181 | 5.906 |
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
HVAC Wholesaler Feedback: An HVAC wholesaler frequently received complaints about leaks in 22mm hot water circulation pumps due to installation errors. Cartridge design reduced their return rate by 85%.
Testimonials
These 20mm seals are a bestseller in our catalog. The carbon quality is consistent, and our contractor clients love that they just slide them on.
—Michael T., Pump Parts Distributor, UK
FAQs about Metal Bellows Seals for High Temperature Pumps
Q: Why choose a cartridge design for such small shaft sizes?
A: Small pumps often have very limited workspace, making it difficult for technicians to precisely install component seals manually. Even a 1mm error in spring compression can cause leakage. Our cartridge design pre-assembles all parts, eliminating installation errors and significantly extending the service life of small utility pumps.
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
