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Pumps Mechanical Seals - PSB21-E

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PSB21-E

Rotary single metal bellow seal
Performance capabilities:

● Pressure:0~3.0 MPa

● Temperature:-120~400℃

● Speed:≤25m/s

Descriptions:

√ Ideal for cryogenic and high temperature condition

√ Excellent capacities of anti-corrosion and anti-seismic performance

√ Rotary bellows to prevent medium particles from depositing between wave plates and self-cleaning function

√ Standardized bellows manufacturing process with high strength and fatigue resistance

Features:

● Welded metal bellows, rotary

● Compaction installation

● Flexible graphite as secondary seal

● Standard floating bushing

Recommended applications:

√ Cryogenic and high temperature pumps

√ Refining & petrochemical

√ Coal chemical

√ Chemical

√ General industry

Piping plans:

● Process side:API682 PLAN 01, 11, 21, 23, 32

● Atmospheric side:API682 PLAN 61, 62

Materials and configurations

Categories

Components

Standard Materials

Optional Configurations (Depending on specific working conditions or applications)

Seal rings

Primary ring

Carbon graphite

WC

Mating ring

SiC

WC

Flexible elements

Metal bellows

Inconel718

Hast.C

Metal parts

Sleeve ,gland

316L

2205/17-4PH

Secondary seals

Rectangular ring

Flexible graphite

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