Metal Bellow Mechanical Seals

• 

Metal Bellow seals are ideal for high temperature applications and harsh chemical services where elastomers cannot be used effectively. This seal type incorporates metal bellows as a spring-loading mechanism to maintain face contact when the seal is not pressurized and eliminates traditional secondary sealing requirements.
In applications where the process temperature exceeds elastomer capabilities, metal bellows mechanical sealswith graphite secondary seals are a good sealing option. Metal Bellows Single Seal is designed for high-temperature services typically found in chemical and petrochemical processes. Graphite secondary seals replace O-Rings to achieve the higher temperature requirements.
Advanced bellows design distributes pressure uniformly across the span of the bellows plate to reduce stress and minimize weld fatigue. Component design replaces most OEM seals.

Features ofMetal Bellow Mechanical Seals

• For unstepped shafts
• Single seal
• Balanced
• Independent of direction of rotation
• Metal bellows rotating
• Asymmetric bellows form results in even stress distribution with benefits of greater strength and higher rate of flexibilty; seal is bi-rotational and inherently pressure balanced.
• Smooth profile is resistant to clogging and therefore ideal for slurries and fibrous liquids. Similarly, seal unit is easy to clean and sterilize in place.
• Unit construction ensures a simple-to-fit seal, with superior heat dissipation paths. Seal unit is reliable and does not wear the shaft.
• Graphite secondary seals for high-temperature performance
• Advanced bellows design for maximum cycle life
• Rotary bellows for enhanced performance in slurry and particulate services
• Hydraulically-balanced seal design
• Blister-resistant carbon
• Proven heat-treated AM 350 bellows construction
• Graphite secondary seals for high-temperature performance

Advantages ofMetal Bellow Mechanical Seals

• For extreme temperature ranges
• No dynamically loaded O-Ring
• Self-cleaning effect
• Short installation length possible
• Pumping screw for highly viscous media available (dependent on direction of rotation).
• For unstepped shafts
• Single seal
• Balanced
• Independent of direction of rotation
• Metal bellows rotating
• Rotating bellows
• Roller bellows
• Recommended applications
• Process industry
• Oil and gas industry
• Refining technology
• Petrochemical industry
• Chemical industry
• Hot media
• Cold media
• Highly viscous media
• Pumps
• Special rotating equipment
  

Materials Combination

• Face: Carbon, SiC, TC
• Seat: Ceramic, SiC, TC
• O-rings: NBR, EPDM, VITON, Aflas, FEP, Kalrez, Chemraz, Grofoil etc.
• Spring: SS316, hastelloy C, AM350
• Metal parts: SS316, hastelloy C

Common malfunction of metal bellow mechanical seals

• At high temperature, the bellows are easier to be broken, also the bellows are broken under high pressure (such as the hot water pump).
• It is easy to occur coking and carbon deposition at the trough between the wave plates, which makes the bellows lose elasticity and cannot compensate, so it can not be used for coking, carbon deposition and crystallized precipitation pump.
• For external installation mechanical seals, the sealing surface can be pushed open when the pressure in the sealing cavity is more than 0.2MPa. This is because the elastic force of the bellows is small and can not withstand the high pressure of the medium. Therefore, it is not possible to use an external bellows mechanical seal when the pressure is high.
• Because the metalis a balanced structure, the effective diameter and load factor must be calculated in use. Otherwise, in the high-pressure propane and propane pump, the phenomenon of "spray leakage" is easy to occur.

Other supplier products

	Flygt Mechanical Seals FSU-90	Replacement for: FSU-90 upper parts for flygt 3230, 3500, 3501 pump FSU-90 upper parts for flygt 3300, 3305, 3310, 3311, 3312, 3350, 3351, 3355, ...
	PTFE WEDGE MECHANICAL SEALS	China-Sealcon is committed to providing the best service and products in fluid industry. And Sealcon's PTFE Wedge Mechanical Seals can replace the ...
	PTFE TEFLON BELLOW MECHANICAL SEALS	PTFE Teflon Bellow Mechanical Sealfor Sale China PTFE Teflon Bellow sealhas been widely applied in the area of atomic energy, defense, aerospace, e...
	METAL BELLOW MECHANICAL SEALS	Metal Bellow seals are ideal for high temperature applications and harsh chemical services where elastomers cannot be used effectively. This seal t...
	Flygt Mechanical Seals	China Sealconsupplies a wide range of seal products for pump. Both standard and custom-designed sealing products are available. Top-quality mechani...

Same products

	Seal	Seller: Taizhou Jiasheng Rubber & Plastic Co., Ltd.	Natural disasters, political instability, or economic downturns can disrupt the supply of raw...
	Silicon Carbide Pump Seals Silicon Carbide Bearings For Canned Motor Pump	Seller: Zhejiang Guanyu Sealing Parts Co., Ltd.	Silicon carbide pump seals products Corrosion Resistance: The silicone material is highly resist...
	DOUBLE CARTRIDGE MECHANICAL SEALS	Seller: Hangzhou Sealcon Fluid Machinery Co., Ltd	The double cartridge mechanical sealis a pre-assembled package of seal components, which make the...
	TC Seal	Seller: Hangzhou Sealcon Fluid Machinery Co., Ltd	TC materials have features of high hardness, strength, abrasion resistance and corrosion resistan...
	Stainless Steel Seal	Seller: Hangzhou Sealcon Fluid Machinery Co., Ltd	Stainless Steel is short for stainless acid resistant steel. It is called Stainless Steel with we...