AS-C348 Double Cartridge Mechanical Seal

This seal is customized dual cartridge mechanical seal as per given drawing. Double or dual mechanical seals are designed for maximum sealing safety. These seals essentially eliminate leakage of the fluid or gas being handled in mixers or pumps.

*Double seals provide a level of safety/zero emissions compliance not achievable with single seals. This is essential when pumping or mixing a dangerous or toxic substance.

*Double seals are a must-have for certain applications in many countries

*These seals are increasingly used by companies to meet specific environmental goals or emissions requirements.

*A properly installed double seal also allows for near-complete control over the seal operating environment and fluid film over the seal faces. This factor alone can greatly maximize seal life.

About Us：

Asinoseal is a professional mechanical seal manufacturer. Covering an area of 4000 ㎡ and having several production lines, it can accept large orders. Especially for cartridge mechanical seals，metal bellow mechanical seals and mechanical seals in various of pumps, we can produce high-quality products in batches and will never let you down. In addition, we，as a company located in Zhangjiagang High tech Industrial Zone，have a professional technical team which can design appropriate products according to your requirements. Welcome to choose & purchase! 

Background Knowledge：

What Is Cartridge Mechanical Seal 

Regarding cartridge seal,the rotating and stationary parts of the seal are pre-assembled into a single unit before installation. After being inspected and pressure tested, they are set on the inner shaft of the shaft seal box, fixed on the shaft with set screws, tighten the cap bolt, and remove the assembly. Positioning sheet, mechanical seal can be in parallel working state, put into operation. This not only facilitates assembly but also guarantees assembly quality. Welded metal bellows mechanical seals are made as cartridge seals, which have the above advantages. The cartridge seal is also a cartridge type mechanical seal. This sealed stationary seat, rotary face, bushing and gland and auxiliary seal are assembled together with a bushing prior to installation for easy inspection of assembly quality. After inspection, just tighten the seal cover and tighten the screws. This pre-assembled, inspected and tested sealing assembly makes it easy to ensure installation and assembly quality. This cartridge seal has the following characteristics:

(1) It is not necessary to measure the working length of the seal during installation;

(2) The axis can be adjusted at any time;

(3) Leakage at start-up does not occur because the seal has been pre-tested;

(4) When installing, just set the tightly sealed cover bolts to ensure the assembly quality;

(5) Protect the sealing surface from contamination by miscellaneous items or damage due to operational errors before installation or start-up;

(6) Machines and equipment can be readjusted after thermal expansion;

(7) Self-centering with cooperation;

(8) It is easy to remove the seal for cleaning and inspection without disassembling the pump equipment. The API682 standard recommends that all mechanical seals use cartridge-type mechanical seals.

How to assemble cartridge type mechanical seals

(1) Assembly of mechanical seal gland and metal bellow seal.

The gland and bellows are connected with 6-12 bolts with a gasket to prevent media leakage.

(2) Hard ring positioning

First fix the fixing ring on the sleeve positioning counterbore, then put the gland and bellows assembly into the fixed ring, put the hard ring, the wedge ring and the rotating seat ring to determine the position of the rotating seat ring. After that, slightly tighten the ring set screw, the ring and the hard ring are screwed, and take out the retaining ring, gland, and bellows assembly.

(3) Face correction

When the rotating seat ring and the hard ring are attached to the bushing, the perpendicularity of the end faces must be maintained. Generally, the end face runout is less than 0.05mm. On the assembly platform, after tightening the set screws on the rotating seat ring, use the dial indicator to correct the side, and tighten the screws connecting the rotating seat ring and the hard ring to ensure the vertical of the end face. degree.

(4) Adjustment of compression amount

The compression of the cartridge bellows mechanical seal is reflected in the thickness of the positioning block. However, some special users have different compressions, which can be adjusted by other methods. If you  need to know how to adjust them. Please contact the ASENOSEAL team!