| Customization: | Available |
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| Structure: | Single End |
| Pressure: | High Pressure Mechanical Seals |
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(1)Features
• Gas-lubricated
• Bi-directional
• Aerostatic
• Ready-to-fit cartridge unit
(2)Advantages
The revolutionary oil barrier/separation seal.
CobaSeal™, the oil barrier/separation seal for Dry Gas
Seals, is a co-axial gas lubricated seal, which eliminates
all disadvantages of existing systems such as labyrinths or
radial carbon rings seals used currently in the industry.
The seal is designed similarly to a gas seal, consisting of a
profiled ductile rotating seat and a stationary spring-loaded
seal face. In contrast to conventional mechanical seal
systems, the buffer gas is led through the seal face into
the middle of the sliding face by means of axial bores.
The buffer gas is then separated into two leakage streams,
both to the inside and the outside diameter of the sliding
face. The coaxial seal is a dual system which is integrated
in one sealing stage.
The aerostatic lift-off by means of differential pressure
results in no wear or contact during operation. In combination
of the state-of-the-art face material, the seal ensures
reliable operation with dry buffer gases (typically nitrogen
gas), reducing at the same time the buffer gas consumption
considerably. There are also no restrictions whatsoever
with regards to "slow roll", "turning gear" and "coast
down" operation.
The profiled sealing face of the rotating seat ensures a stiff
gas film and contact-free operation in case of equipment
upsets, e.g. vibrations.
(3)Item Description
1 Seal face, stationary
2 Seat, rotating
3 Thrust ring
4 Spring
5 Shaft sleeve and seat retainer
6 Housing (adapted in size to the installation space)
7 Oil slinger ring
D Separating gas
(4)Operating range (see note on page 1)
Shaft diameter: 29.5 ... 179.5 mm (1.16" ... 7.00")
Pressure: p = 0 ... 10 bar (0 ... 145 PSI)
Temperature: t = -20 °C ... +200 °C (-4 °F ... +392 °F)
Sliding velocity: vg = 0 ... 150 m/s (0 ... 492 ft/s)
(5)Materials
Seal face: Silicon carbide (Q1) with DLC coating
Seat: Ductile stainless steel
Secondary seals: FKM (V)
Metal parts: 1.4006
(6)Standards and approvals
• NACE
(7)Recommended applications
• Oil and gas industry
• Refining technology
• Petrochemical industry
• Nitrogen
• Air
• Centrifugal compressors
• Blowers
Dimensions in mm
| DN | DS | d1 | d2 | l |
| 50 | 29.5 | 47.0 | 98.0 | 31.0 |
| 55 | 34.5 | 52.0 | 103.0 | 31.0 |
| 60 | 39.5 | 57.0 | 108.0 | 31.0 |
| 65 | 44.5 | 62.0 | 113.0 | 31.0 |
| 70 | 49.5 | 67.0 | 118.0 | 31.0 |
| 75 | 54.5 | 72.0 | 123.0 | 31.0 |
| 80 | 59.5 | 77.0 | 128.0 | 31.0 |
| 85 | 64.5 | 82.0 | 133.0 | 31.0 |
| 90 | 69.5 | 87.0 | 138.0 | 31.0 |
| 95 | 74.5 | 92.0 | 143.0 | 32.0 |
| 100 | 79.5 | 97.0 | 148.0 | 32.0 |
| 105 | 84.5 | 102.0 | 153.0 | 32.0 |
| 110 | 89.5 | 107.0 | 158.0 | 33.0 |
| 115 | 94.5 | 112.0 | 163.0 | 32.0 |
| 120 | 99.5 | 117.0 | 168.0 | 33.0 |
| 130 | 109.5 | 127.0 | 178.0 | 32.0 |
| 135 | 114.5 | 132.0 | 183.0 | 33.0 |
| 140 | 119.5 | 137.0 | 188.0 | 33.0 |
| 150 | 129.5 | 147.0 | 198.0 | 33.0 |
| 160 | 139.5 | 156.0 | 208.0 | 37.0 |
| 170 | 149.5 | 166.0 | 222.0 | 37.0 |
| 180 | 159.5 | 176.0 | 232.0 | 37.0 |
| 190 | 169.5 | 186.0 | 242.0 | 39.0 |
| 200 | 179.5 | 196.0 | 252.0 | 39.0 |
We have large stock, so our delivery is very fast.
For example,if products are standarded, the delivery time is one week.
Our company and factory addrss: Ningbo City, Zhejiang Province,China.
Our city has a large port and an airport, so its transportation is very convenient.
Question1: What are the prices of your products?
Answer: For each model, the unit price is listed on the website, but what is displayed on the website is only the average market price. For specific models, you can contact us for further consultation and negotiation.
Question 2: Are you a factory or a trade company?
Answer: We are a factory with top sales for the trade service.
Question 3: What is the minimum order quantity for each order?
Answer: For products of regular models, the minimum order quantity is at least five. We welcome you to test the quality of our products and services through placing trial orders. Looking forward to the long-term cooperation with you.
Question4: What is your company's service tenet?
Answer: Quality first, service upmost. We promises that if there is any problem with the quality of the product, or if the product is damaged during the transportation, our company will be responsible for compensation, regardless of the ordder turnover value.
Question5: Can I try to get a SAMPLE before the order?
Answer: Sure. Our company will provide you with samples for free, but you will have to pay for the international delivery (freight collect payment).
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