How to Convert Mechanical Seal Pumps to Packing?

Can I ask why you want to do this. Mechanical seals are good and easy to replace.

Normally the pumps which are supposed to be using Mechanical Seals after commissioning of a Plant are run with gland packings during the pre-commissioning activities to avoid damage to mech. seal.

Hence I don't think it is any different in your case unless your pumps are not meant to run with gland packing. Therefore you need to check first whether gland packing of the same size as the stuffing box needs are available in the market and then replace the Mech.Seal. For continuous running you need the lantern ring also to be used alongwith the gland packing and provide a clear fluid connection to it that matches with the pumped liquid or process-wise acceptable to be mixed with the pumped liquid.

Thanks.i will tow this line, going back to do a re-check!

Send the pump drawing with seal chamber measurements to seal suppliers and they will be able to give you packing and recommend the type, etc. They will also keep you out of trouble to prevent you from doing someting unsafe. So process data sheet and pump drawing = expert opinion from a liable party. Be prepared for chasing the answer 10 times as seal people are quite busy with seal orders and this is going backwards for them.

Not to mention all the fish they eat.

Jacky,

You should probablygo back to the pump manufacturer, not the mech seal manufacturer. The pump manufacturer should have a stuffing box and packing solution as their standard offering. Mech seals are usually "a special". Also, if you are pumping water, and the total dynamic head of the pump is not that high, you may be able to get away with not even using gland water on your packed pump. Simply tighten the gland follower on the stuffing box enough so that the water is just dripping out the pump (not gushing). There needs to be a bit of dripping in all packed stuffing box designs so that this ensures all packing is being lubricated and cooled by the water.

To avoid backed up seal deliveries one could order a Polar Bear and see how many seals are in his tummy.