Rotary mechanical seal ｜ Mechanical seal & Carbon "TANKEN SEAL SEIKO"

Features

We will select and provide seals and materials suitable for your requirements, such as multi-spring type / monocoil spring type, slurry-resistant / corrosion-resistant environment, single / double / tandem, etc., according to the specifications / applications.
As a general purpose seal, the pump can be mounted in an ISO 3069 stuffing box.It is also widely used in stirrers. We can handle sizes from small to over φ200.

Rotary mechanical seal usage example

Comparison of Rotary mechanical seal and gland packing

Comparison item	Mechanical seal	Grand packing
Where does the wear/damage occur	Mainly on surfaces with continuous contact.	The inner circumference side of the grand packing and the outer circumference side of the shaft / sleeve.
What happens when it wears	As the surfaces with continuous contact are worn, they are pushed by the spring to follow them, so there is no gap between them.	A gap is created between the gland packing and the shaft / sleeve, and the fluid inside leaks.
What to do if it wears	No maintenance work required.	Tighten the gland retainer with bolts. (Tightening)
How much is the leak	As a standard, within "3 ml / hour".	The loss may be large because it may exceed "1 L / hour".
Power consumption	Since the surface of contact (friction area) is small, the power consumption is small.	Since the surface of contact (friction area) is large, the power consumption is large.
Seal life	It takes 2 to 3 years on average with a rotary seal. An average of 5 to 6 years with a static seal.	3 months to 1 year. At the time of replacement, it is often necessary to replace the sleeve.
The cost difference is	The initial cost is relatively high. However, since the maintenance cost is low, the total cost is low as a result.	The initial cost is low. However, considering the frequency of daily retightening work and sleeve replacement work, the maintenance cost is high.
The difference in the scope of application	Suitable for high pressure, high temperature, high peripheral speed, slurry specifications, and has a wide range of applications.	Not suitable for high pressure, high temperature, high peripheral speed, slurry specifications, and the applicable range is narrow.