Metal Bellow Mechanical Seal For Water Pump
A welded metal bellows is a zero leakage dynamic seal capable of a great range of motion. The metal bellows is manufactured from sheet stock. The material of construction may be stainless steel, high nickel alloys, titanium or other alloys to suit the application requirements. The material thickness may range from 0.001" to 0.025" thick.
Stroke Comparison of Edge Welded Bellows:
Stroke of edge welded bellow Stroke of a typical formed bellow
* Stroke up to 90% in compression * Stroke limited to 10%
* Stroke up to 30% in extension
Flexibility characteristics of an Edge Welded Bellow:
Flexibility
* Edge welded bellows are capable of softer spring rate
* Axial, angular and radial
How Edge Welded Metal Bellows are manufactured:
Welded diaphragm metal bellows are composed of two contoured diaphragms - each constructed from thin stainless steel - are welded at the inside diameter to form a convolution. Capsules are formed when convolutions are stacked on a horizontal arbor and welded at the outside diameter.
Detailed Images
Size InformationWelded Bellows Technology
GTAW & CO2 laser welding
Thickness (0.001 to 0.025 inches)
Sizes, diameters (0.125 to 23 inches)
Round and non-round
Materials
Stainless steels
High nickel alloys
Titanium
Mass spectrometer leak tight
* 1 × 10-10 std cc/sec He capability (1 cc in 320 years)
Zero leakage dynamic seal
Model
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Customized
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Material
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SUS304/SUS316L/AM350;
Customized:Titanium/Inconel
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Function
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Connection, Sealing
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Temperature
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Product use temperature depends on material temperature
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Working Pressure
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Product pressure depends on the thickness of the diaphragm
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Vacuum leak rate
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1*10 -10 PaL/s
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Mechanical life
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1 million times
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Diaphragm thickness
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It varies from 0.10mm to 0.60mm. Depends on customer needs.
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Manufacture Specification
* Bellows should mostly work in compression, 20% extension max. For maximum life, always work in compression
* Nested height of bellows should have a minimum of .002" between max weld bead size for 3 ripple configuration
* Avoid imposing lateral offset while axial stroking. Severely degrades life
* Max pitch 1/3 of span
* Bellows free length will typically stabilize at 15 to 25% of as welded length
Nested Ripple
Long Stroke Capability
Compact Nested Length
Good Linearity
Moderate Pressure Capability
High Cycle Life
Flat Plate
Limited Stroke Capability
Excellent Linearity
Good Pressure Capability
Excellent Effective area control
Crescent
Good Stroke Capability
Compact Nested Length
Good Linearity
Good Pressure Capability
Comflex has been in the industrial metal hose, industrial metal bellows, expansion joint, exhaust pipe, interlocked hose & metal conduit for more than 30 years. Meanwhile we can also provide the spare parts related to the flex hose to the customers, like metal braiding SS304, SS316, SS321, braiding wire etc. We've been exported to Russia, US, Canada, Italy, Korea, Uk, Ukraine, Poland etc. It would be our honor to achieve business relationship in the future.
Certification
Delivery & Package
1.Q:Are you a factory or trading company?
A: We are a factory, manufacture.
2.Q:Where is your factory located? How can I visit there?
A: Our factory is located in Taizhou City, China.You can fly to Wuxi or Shanghai
airport directly. All our clients, from home or abroad, are warmly welcome to visit
us!
3.Q:How can I get some samples?
A: We are honored to offer you samples.
4.Q:How does your factory do regarding quality control?
A:"Quality is priority. we always attach great importance to quality controlling
from the very beginning to the very end. Our factory has gained ISO9001
authentication.
5.Q:Can you give me a discount?
A:since we are factory , the price is depend on QTY , i will give you discount
depend on your quantity