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COMPARISON OF BELLOWS  
Comparative table of bellows ● : Ultrahigh, ◎ : High, ○ : Middle, △ : Low

 

DSI BELLOWS

Welded bellows

Formed bellows

SUPER BELLOWS

VACUUM BELLOWS

Elasticity

Thickness

0.1~0.4mm

0.1~0.4mm

0.05~4mm

0.2-~0.4

Winding

Leakage rate

<1x10-10Pa·m3/s

<1x10-9Pa·m3/s

<1x10-10Pa·m3/s

<1x10-8Pa·m3/s

Treatment

Ultrasonic cleaning
Vacuum drying

Ultrasonic cleaning
Vacuum drying

Ultrasonic leaning
drying

Cleaning
drying

Price

Durability

Weld

Precision TIG

Precision TIG

TIG, Laser

TIG

Features

50%~60% Elasticity rate
100% Stability rate
High stroke
Enable to use a UHV
Outgasing △
Life cycle ●

30% Elasticity rate
Vibration isolation
Enable to use a HV
Outgasing △
Life cycle ◎

~80% Elasticity rate
Any design possible
Outgasing ○
Enable to use HV
Life cycle ●

10% Elasticity rate
Enable to use MV
Outgasing ◎
Life cycle △

 

 
     
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