Rubber Expansion Bellows
Bellows are designed to meet the required cycle life, which may be just a few cycles, 1 million cycles or infinite life. Materials of construction may include: stainless steel, Inconel, Haynes, titanium or others and are chosen to meet the operational and environmental conditions for the application.
Typical applications include: cryogenics, heat transfer fluids, severe chemicals and corrosives at temperatures from -350° to +650°F (-212° to +343.33°C) with standard seal construction. (For higher temperatures-our engineering department.)
Operating limits
Specification : 10-150 mm
Pressure : ≤1.2Mpa
Temperatuee : -20-220ºC
Lieear speed : ≤ 12m/s
Axial movement : ±0.5 mm
Metal Bellows Mechanical Seals Design Features
1. Wide service range from cryogenics to heat transfer liquids and corrosive chemicals.
2. Long service life-only one moving part.
3. Flexible bellows construction eliminates seal hang-up due to solids or dirt in pumpage.
4. Metal sealing wedge eliminates temperature restrictions of elastomers or plastics.
5. Built-in hydraulic balance eliminates step in shaft or sleeve*.
6. Available for either inside or outside mounting.
7. Stabilizer tabs prevent possible damage to the metal bellows due to vibration and excessive shaft run-out.
Metal bellows mechanical seals are also made into single and double cartridge configurations
Applications include:
High vacuum seals
Leak-free motion feedthroughs
Flexible joints
Volume compensators, accumulators
Pressure and temperature actuators
*Bellows can also design other Custom Products to meet your application. If you don't see a product that meets your specific requirements,Pls feel free to contact us.*
Dandong Keda Pump Industry Seal Manufacture Co., Ltd is one of the metal bellows mechanical seal manufacturers in China, our company has strong technical force, advanced manufacturing equipment and perfect testing method, using scientific quality management system together with our high-quality staff, can provide all kinds of metal bellows mechanical seal to our clients.
Our factory covers 40000 square meters, of which the production area is 18000 square meters, we have existing 4 senior engineers, 2 economists, 6 engineers, 8 professional technicians, 4 senior technicians. Our professional staff is 62.5% of the company's employees, we have total 56 sets processing equipments, such us high precision special equipment, micro beam plasma welder and testing equipment, optical flat. We also have more than 30sets of general equipment, lathe, drilling machine, milling machine, slotting machine, boring machine, grinding machine, punching machine, also equipped with professional grinding machine, polishing machine and Spring drawing machine, makes our products quality are well reliable.
Our company is specializing the bellows mechanical seal, annual production capacity of around five thousand units, annual output value of thirty million.
We drawn on advanced technology from foreign countries, together with the domestic features, designed DMB series metal bellows mechanical seal with rigorous structure, reliable performance, good quality, complete specifications. The product reach the advanced level of domestic similar products which identified by the scientific research, quality inspection, technical supervision and relevant experts.
Conform the standard requirement of GB/JB/T8723 T6556-1994-1994, JB/T6374-2006, and passed the ISO quality system certification, the products are widely used in scientific research, electronics, petroleum, chemical industry, chemical fiber, papermaking, medicine, etc.
According to market needs, our company developed oilfield high pressure injection pumps, boiler feed pump, booster pump, sweetener, imported fuel pump mechanical seal, and storage tanks KD type rotary jetting machine. Also, produced spring series mechanical seal, metal flexible diaphragm coupling, rotary joints, Tensile bellows, downhole tools and wellhead anti-theft device. We are and will make continous efforts to make new products with high technology, safety, energy saving, and PRO-environmental.
