CMB21D

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Double metal bellow seals

Performance capabilities:

● pressure：0~3.0 MPa

● Temperature：-120~400℃

● Speed：≤25m/s

Descriptions:

√ Applied for cryogenic and high temperature condition

√ Prevent medium leaking into the atmospheric

√ Compact designs, resistance for pump housing evacuation

Features:

● Welded metal bellows, rotary

● Shrink fitted seal face

● Compaction installation

● Flexible graphite as secondary seal

Recommended applications:

● Refinery&Petrochemical

● Coal chemical

Piping plans:

√ Process side:API682 PLAN 01, 21, 32

√ Between seals:API682 PLAN 53A, 53B, 53C, 54

√ Atmospheric side:API682 PLAN 61, 62

Materials and configurations

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Category

Mechanical seals for pumps

Quantity

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

Parameters

Materials and configurations

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CMB21/B21

CMB54-E

Contact

Email: export@sns-china.com
International sales: +86-028-85373902
Address: No. 8, 4th Wuke West Road, Chengdu City, Sichuan Province，China

Sinoseal Holding Co., Ltd. is a Chinese listed company and a leader in China’s Fluid Sealing Industry. Sinoseal has transformed its 40 over years of research and development experience into a professional company specialized in the production and a provider of overall sealing solutions for its customers. With our strong technical strength and advance technology and equipment used in manufacturing , Sinoseal’s products and services enjoy a good reputation across the industries it serves in China.

Categories	Components	Standard Materials	Optional Configurations (Depending on specific working conditions or applications)
Seal rings	Primary ring	Carbon graphite	TC
Seal rings	Mating ring	SiC	TC
Flexibleelements	Metal bellows	Inconel718	Hast.C
Metal parts	Sleeve ,gland	316L	2205/17-4PH
Secondaryseals	Rectangular ring	Flexible graphite	/