Pool Pump Seal Type 21

Elastomer bellow mechanical seal SRS-E21, can be replaced of Johncrane 21. Suggested operating limits Temperature: -20 - 120℃ Speed: ≤15m/s Pressure≤1.0Mpa Combined material Rotary face: Carbon/Sic/TC Stat Ring: Ceramic/Sic/TC Seat Type: Standard SRS-S11, Alternative SRS-S20/S21. Features The...

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Product Details

Elastomer bellow mechanical seal SRS-E21, can be replaced of Johncrane 21.


Suggested operating limits

Temperature: -20 - 120℃

Speed: ≤15m/s

Pressure≤1.0Mpa


Combined material 

Rotary face: Carbon/Sic/TC

Stat Ring: Ceramic/Sic/TC


Seat Type: Standard SRS-S11, Alternative SRS-S20/S21.


Features

The drive band's "dent and groove" design eliminates overstressing of the elastomer bellows to prevent bellows slip and protect the shaft and sleeve from wear.

Non-clogging, single-coil spring provides greater dependability than multiple spring designs and will not foul due to fluid contact.

Flexible elastomer bellows automatically compensates for abnormal shaft-end play, run-out, primary ring wear and equipment tolerances.


The Type 21 is ideal for use in centrifugal, rotary and turbine pumps, compressors, chillers and other rotary shaft equipment. It is also commonly used by the waste water and water systems industries for applications such as waste treatment, potable water and HVAC.


Also we could manufacture seals according to your drawing, and design as your request.image.png

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How is your price?

Our price is competitive because of 4 reasons:

1.We are factory with long history ,our constant material supplier give discount to us for long time cooperation which result in a low material cost;

2.Our steady experienced workers work with high effiency which relatively saves manual cost too;

3.Siriuseal has a big number of customers who order constantly which allows us to work in “mass production” way,like you need 5pcs,we make 20pcs,so material cost low,and others will be kept as our stock for sell to this big customer database.

4.Siriuseal aims to keep huge stock to shorten delivery time ,which enable us to make    always big quantity to lower cost down.  


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