Types of Mechanical Seal

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Different pusher type mechanical seal non pushe type mechanical seal please give me answer

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Difference between both types of seal are the use in different pressure applications, media and permissible pressure limits. Pusher type seal rotates axially with shaft and the spring of the seal pushes dynamic part towards stationary part in order to make proper contact with faces of both parts in such a way that liquid leaks could be controlled as per design of spring tension required for max pressure limits whatever it is for pusher type mechanical seal.
Non pusher type also known as elastomeric bellow seal is consisting of bellow assembly, has a static stationary seal which does not rotates axially with shaft but it is stayed against the shaft and bellow is the component of non pusher seal that acts as both the load element. In short, non pusher mechanical seal are designed to maintain a constant contact force between the sealing faces.

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Tefon bellow mechanical seal ke bare me bataye

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Although Teflon bellow type is discussed but in crux, i will upload soon in details
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[@MohanPatel-gp6qi]

Balance ओर unbalance ka matlab kya hota hai 🙏

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The load that acts across the seal faces of mechanical seal is mechanical seal balance. Balance ratio is a ratio of the hydraulic closing area to the hydraulic closing area of mechanical seal.
Unbalanced seals have balance ratios from 110 to 160% whereas unbalanced seals have 60 to 70% and used in stepped shaft. In Short, a seal with a balance ratio B100 is unbalanced mechanical seal.
.

[@mechanicalengineeringpract140]

Due to typographically error, kind find edited reply as follows;
The load that acts across the seal faces of mechanical seal is mechanical seal balance.
Balance ratio is a ratio of hydraulic closing area to the hydraulic opening area of mechanical seal. Unbalanced seals have balance ratios from 110 to 160% whereas balanced seal have 60 to 90% and used in stepped shaft.
In short, a seal with a balance ratio B>100% is called Unbalanced mechanical seal & seal with a balance ratio B

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😢اگر سیل نمبر معلوم نہ ہو تو کیسے معلوم کریں

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Let,s take example of single spring mechanical seal (pusher type). Take first shaft inner diameter for rotary part and then housing diametre and select as per width the required m seal

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Housing inner bore for selection of stationary part

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You will find m seal by measuring of inner dia of rotary part n housing inner dia of stationary part of seal with corresponding width

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Shaft od not id, typographical error pls
It is solid shaft so od, for hollow shaft, can be id of such type of shaft

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