• Anti-Extrusion Rings: O-rings are equipped with backup rings to prevent extrusion under high pressure.
• Robust Drive Keys: Uses milled drive slots and keys to handle high torque start-ups without stress on the bellows or spring.
Key Features
• Hydraulically Balanced: The stepped shaft/sleeve design reduces the closing force on the seal faces, allowing operation at higher pressures (up to 50 bar) common in hydrocarbon pumping.
• API 682 Type A Equivalent: Designed to meet the requirements of API 682 Type A pusher seals, ideal for refinery services.
• Low Heat Generation: Balanced geometry minimizes friction, preventing the vaporization (flashing) of volatile hydrocarbons like propane or butane.
Technical Specs | Materials | ||
Mediums | Water, oil, acids, alkali, etc. | Stationary Ring | Carbon/Ceramic/Sic/TC |
Temperature | -20℃ to 180℃ | Rotary Ring | Carbon/Sic/TC |
Pressure | ≤1MPa | Secondary Seal | NBR/EPDM/Viton |
Speed | ≤10m/s | Spring and Metal Part | Stainless Steel |
Product Specifications
| Metric Shaft Size D1 | Size Code | D3 | D7 | L1 | L4 |
| 18 | 0180 | 32 | 33 | 35 | 10 |
| 20 | 0200 | 34 | 35 | 35 | 10 |
| 22 | 0220 | 36 | 37 | 35 | 10 |
| 24 | 0240 | 38 | 39 | 40 | 10 |
| 25 | 0250 | 39 | 40 | 40 | 10 |
| 28 | 0280 | 42 | 43 | 40 | 10 |
| 30 | 0300 | 44 | 45 | 40 | 10 |
| 32 | 0320 | 46 | 48 | 45 | 10 |
| 33 | 0330 | 47 | 48 | 45 | 10 |
| 35 | 0350 | 49 | 50 | 45 | 10 |
| 38 | 0380 | 54 | 56 | 44 | 11 |
| 40 | 0400 | 56 | 58 | 44 | 11 |
| 43 | 0430 | 59 | 61 | 49 | 11 |
| 45 | 0450 | 61 | 63 | 49 | 11 |
| 48 | 0480 | 64 | 66 | 49 | 11 |
| 50 | 0500 | 66 | 70 | 47 | 13 |
| 53 | 0530 | 69 | 73 | 57 | 13 |
| 55 | 0550 | 71 | 75 | 57 | 13 |
| 58 | 0580 | 78 | 78 | 57 | 13 |
| 60 | 0600 | 80 | 80 | 57 | 13 |
| 63 | 0630 | 83 | 83 | 57 | 13 |
| 65 | 0650 | 85 | 85 | 67 | 13 |
| 68 | 0680 | 88 | 90 | 64.7 | 15.3 |
| 70 | 0700 | 90 | 92 | 64.7 | 15.3 |
| 75 | 0750 | 99 | 97 | 64.7 | 15.3 |
| 80 | 0800 | 104 | 105 | 74.3 | 15.7 |
| 85 | 0850 | 109 | 110 | 74.3 | 15.7 |
| 90 | 0900 | 114 | 115 | 74.3 | 15.7 |
| 95 | 0950 | 119 | 120 | 74.3 | 15.7 |
| 100 | 1000 | 124 | 125 | 74.3 | 15.7 |
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
Pipeline Booster: A diesel booster pump seal was failing due to high pressure (40 bar). We installed this Balanced O-Ring Seal. The balanced design reduced face loading, stopping the heat generation and leakage.
Testimonials
Reliable performance in our light cycle oil pumps. The balanced design handles the pressure spikes during line switching.
—Maintenance Planner, Refinery
FAQs about Metal Bellows Seals for High Temperature Pumps
Q: What is a "balanced" seal?
A: A balanced seal has a design where the area of the seal face exposed to hydraulic pressure is reduced. This means less force pushing the faces together, allowing the seal to run cooler and last longer at high pressures compared to unbalanced seals.
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
