Multiple Spring Mechanical Seals-APM43
Features
- API 682 Category 2 and 3, Type A, Arrangement 3 seal
- Dual seal in back-to-back arrangement
- Balanced
- Cartridge unit
- Rotating multiple springs
Typical Applications:
For equipment with rotating shafts handling non-film-forming media and conveying toxic, hazardous, flammable, or explosive substances.
- Refining technology
- Oil and gas industry
- Petrochemical industry
- Chemical industry
- Power plant technology
- CCUS
- Hydrogen
- Sustainable plastics production
- Alternative fuels production
- Nuclear power technology
- Highly volatile hydrocarbons
- LPG plants
- API 610 / ISO 13709 pumps
- Process pumps
Mediums:
Suitable for petroleum, chemical solutions, weak acids/alkalies, salts, refrigerants and fluids with low solids content.
Performance Capabilities:
Pressure: 0~ 4.5MPa
Temperature: -40 ~260°C
Linear Speed: ≤25 m/s
Material Selection:
Metallic Components:304、316L、2205、2507
Spring: 316L, Hastelloy C-276
Seal Rings: SSiC , WC、Graphite
Elastomer Options: FKM, FFKM, EPDM, NBR , OMNISEAL
This product can be an alternative to similar products such as EagleBurgmann H75A4-B.
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Technical Features:
1.High-strength,High-performance seal materials for optimal performance.
2.Balanced design with precisely calculated face pressure ratio to reduce face load and minimize heat generation.
3.Multiple-spring design: compact size, even spring load, ensures optimal face contact for reliable sealing.
4.Built-in flush circulation system – enhances fluid flow efficiency and optimizes seal operating conditions.
5.Large-cross-section sealing rings maintain floatability while enhancing sealing performance.
6.Highly reliable drive design effectively prevents slippage.
Solution Selection:
A barrier/buffer fluid system is required to provide lubrication and cooling, with barrier fluid pressure typically maintained 0.14~0.41MPa (20~60psi) above seal chamber pressure. The inner seal can be configured with Plan 11, 21 or 32 flush schemes based on application requirements, while the barrier system generally adopts Plan 53A, 53B or optionally Plan 54.