whats your experience in sealing 1200cP viscosity liquid at ambient temp. ? would upstream pumping seal be helpful in this application? or u have any good reliability record with any other crane seal for this application? if uptream pumping seal being used for this application, i'm very much...
Dear All, I would like to hear from someone who has experienced leakage problems with dual mech seal that is designed for pumping styrene monomer.we are having seal reliability issues as the seal fails very frequently say 2 times a year due to various reasons such as i/b bellow tear during start...
Dear All,
I appreciate if anyone could clear me this doubt as i am very new to rotating equipments.
"mark the shaft and rotate 2 1/4 revolutions weekly as a part of preservation in all machinery’s as per API-686".
In this statement, why the rotation is 2 1/4 turn. What is the specific...
Hi,
Good day to everyone.
I appreciate if anyone can tell me the common causes for a Dry Gas seal failure in a Cryogenic Service.
A John Crane Type 28 VL is installed on a (newly commisioned )Ethylene pump.
Its a Vertical Turbine pump. Since the seal is a proven seal and it is running for...
Dear All,
Why fretting happens in particular seals only? For example, In a process industry, if we have a hundred seal almost 80% of the seal's secondary seals contacts the shaft/sleeve. But only in particular seals failure happens due to fretting at the shaft/sleeve.
One more intresting thing...
To All,
Recently I experienced a problem(Out board stationary ring crack) with my mechanical seal. The Outboard seal start to leak after two days of startup. leakage rate was 3drops/min. we found during dismantlig that the crack(near anti rotation pin groove) at the out board stationary ring...
