Series MBO seals are widely used in refining, petrochemicals and chemical industries. Static o-ring is used as a secondary member. The absence of dynamic o-ring prevents possibility of seal hang-up. Centroid loaded face design increases seal life by avoiding seal face distortion caused due to thermal expansion and also ensures optimum face flatness over a wide operating condition. As a standard, AM350 bellow cores are used. For chemical compatibility Alloy C-276 or Alloy 718 bellow cores can be used.

Metal bellows seal offer distinct advantages in high temperature application. A bellow core constructed by welding number of metal diaphragms together eliminates the need for springs, providing more flexibility to the seal face compensating for seal face wear.

Seal Characteristics

• Single Seal
• Balanced
• Metal Bellows
• Dependent on directions of rotatio

Application

• General Chemicals
• Petrochemicals
• Refineries

Performance Range

Shaft Diameter	dl	:	18...100mm
Pressure	p	:	20 bar (max)
Temperature	t	:	-20...2200C
Velocity	v	:	20 m/sec

Materials

Seal Faces	:	Carbon, SiC, Tung. Carbide
Metal Parts	:	SS316, SS304, Carpenter 42, Hastelloy-C, Alloy 20
O-rings	:	Elastomers, PTFE