shaft seals
shaft seals
(OP)
Hello ,
I am seeking to quantify the correct loading for length packing . Specifically I refer to the technique known as " live loading" where a standard compression spring energises rings of length packing to create a shaft seal . This technique can be used in both reciprocating and rotary applications . What is the correct loading ? Does it vary according to conditions ? eg packing type / surface speed etc
I'm keen to discuss the matter with anyone who knows...
I am seeking to quantify the correct loading for length packing . Specifically I refer to the technique known as " live loading" where a standard compression spring energises rings of length packing to create a shaft seal . This technique can be used in both reciprocating and rotary applications . What is the correct loading ? Does it vary according to conditions ? eg packing type / surface speed etc
I'm keen to discuss the matter with anyone who knows...





RE: shaft seals
Not sure if this helps ??
Ash Fenn
www.cdrpumps.co.uk
RE: shaft seals
You have virtually answered your own question - it will depend on packing type and pressure you are sealing against.
The problem I see with this type of arragement when first installed it may well have the correct load, but as the packing compresses and wears overtime the spring force will reduce and leakage will increase.
RE: shaft seals
Johnny Pellin