Metal Bellows Seals Chemical Service Seals


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Metal Bellows

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Metal Bellows Seals
for General and Chemical Service

    Metal Bellows

  • Metal Bellows seals can seal with Flexible Graphite instead of a rubber boot or o-ring Elastomers allowing it to be used in higher temperature applications

  • No Springs to clog !!!!!

  • Metal Bellows seals are a very effective method of maintaining seal face pressure on the seal face.

  • Metal Bellows seals that do use o-rings only require one static o-ring to seal off any leakage along the shaft in Chemical Service this o-ring will be PTFE.

Seal Dash Number "A" Shaft size
.000
-.002
B REF C ±.030 D REF E REF
-16 1" 1.562 1.25 1.438 1.235
-18 1.125" 1.687 1.25 1.565 1.362
-20 1.25" 1.812 1.312 1.719 1.516
-22 1.375" 1.937 1.437 1.845 1.641
-24 1.5" 2.062 1.437 1.97 1.716
-26 1.625" 2.187 1.437 2.095 1.841
-28 1.75" 2.312 1.437 2.22 1.966
-30 1.875" 2.437 1.5 2.345 2.09
-32 2" 2.562 1.5 2.471 2.216
-34 2.125" 2.687 1.5 2.595 2.34
-36 2.25" 2.812 1.562 2.721 2.466
-38 2.375" 2.937 1.562 2.846 2.59
-40 2.5" 3.187 1.562 3.096 2.79
-42 2.625" 3.312 1.625 3.221 2.915
-44 2.75" 3.437 1.625 3.347 3.04
-46 2.875" 3.625 1.844 3.502 3.201
-48 3" 3.75 1.844 3.727 3.327
-50 3.125" 3.875 1.909 3.772 3.442
-52 3.25" 4 1.909 3.897 3.567
-54 3.375" 4.125 1.909 4.022 3.629
-56 3.5" 4.25 2.052 4.147 3.817
-58 3.625" 4.375 2.052 4.272 3.942
-60 3.75" 4.5 2.072 4.397 4.067
-62 3.875" 4.625 2.072 4.522 4.192

An alternative to using PTFE wedge multi-spring seals is a metal bellows seal with a singluar o-ring. Because the o-ring is static it will not wear on the shaft. When installed correctly metal bellows seals will provide exceptionally long service. Metal bellows seals are and excellent solution on chemical applications where Kalrez, Chemrez,Viton, FKM, Buna, Aflas or EPDM are not compatible. 

For many years an inexpensive form of metal bellows seals have been used very successfully in the waste water / sewage industry and in the agricultural fields pumping irrigation water.  These seals were generally made of a formed bellows rather than a welded bellows.  Welded bellows seals are much stronger and have superior flex and recovery characteristics which are more ideal to holding seal faces together but cost more to manufacture.  Welded metal bellows seals are less prone to metal fatigue and are available in single and double ply.

American Seal & Packing has negotiated the production of welded metal seals made for us at a cost similar to formed bellows.  As a result we can offer welded metal seals that will last longer in the field resulting in less pump down time, less loss production and fewer labor costs, saving you incalculably.

Of course none of this would be attainable if the quality system was not insuring consistent, repeatable, quality.  Manufactured under an ISO-90001 system, maintaining the quality of the materials, and workmanship.  On receipt of the product the seals are re-inspected, labeled and packaged.  

At some point any seal will wear.  American Seal & Packing also does seal repairs. To assure you always get your seal back regardless of who does your seal repair, we recommend having your new seals laser etched when you order them new. At the time of your order just indicate how you would like your seal marked.

We offer both 

1) General to sever application elastomerically sealed metal bellows seals.

2) High temperature seals for over 500 F applications.

 

 



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© 2008 American Seal & Packing, Inc.
GRAFOIL® is a registered trademark of GrafTech International Holdings Inc.
Viton® is a registered trademark of DuPont Performance Elastomers.
Kalrez® is a registered trademark of DuPont Performance Elastomers.
GFO® is a registered trademark of W.L. Gore and Associates
ates
American Seal & Packing, Inc., Fountain Valley, CA 92708  •  714-593-9780