| Spring Loaded Mechanical Face Seal Assembly (MFS) |
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MFS Assly as a rule is Spring Loaded. Higher the pressure of fluid handled (Seal Air in this case) higher the Spring Loading. But this MFS Assly is NOT Spring Loaded. |
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For MFS Assly to work, i.e. to have effective sealing, the sealing faces of the rotating and stationary components must be smooth and flat to be in good sealing contact. In the existing MFS Assly it is neither possible to achieve the flatness nor is it possible to ascertain, let alone make them so, in-situ. As for the ‘smoothness’ the graphite sticks are supposed to be soft enough to offer Sealing & Lubrication, neither of which is offered in the existing MFS Assly. Copious amounts of Seal Air can be noticed in exhausts of any 623 or 763/783/803 mills (with BHEL’S MFS Assly) in the country. Anything more than just ‘bleed’ leaking of seal Air is an indication that the MFS is NOT Sealing. |
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The original MFS Assly is, therefore, NOT a ‘TRUE’ MFS Assly.
Our MFS Assly is SPRING LOADED. Checking and correcting (with our Special Purpose Tool) the flatness of the sealing faces in-situ positively and effectively is a special design feature of our MFS Assly. The grade and placement of graphite sticks in Seal Assly of our MFS Assly offer a wide Sealant Lubricant band. Only, if at all, Seal Air in Exhaust is the ‘bleeding’ Seal Air.
The design is Patented. PAT Nos. : 196557 and 219460
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