The mystery of poly bushes.

[les]

Anyone out there know if there is any significance in the different colours found in these poly type suspension bushes, I have heard that it can be an indication of the hardness of the plastic. If that's the case maybe someone can tell me what colour is what degree of hardness? I have dark blue, yellow and red ones! Also are all bushes of a certain colour the same, for example all reds are the same? Or is it, as I would not at all be surprised by, a case of no standard agreement/rule?

[mogbob]

Les
http://www.polybush.co.uk will explain their different coloured grades ( link half way down the page ).I guess you would have to e-mail their technical department for very detailed specifications.
Bob

[les]

Interesting Bob, thanks.

[jagnut66]

( link half way down the page )

Interesting stuff but mine are green (not red. orange or blue).....................

[les]

This is the mystery, the link mentions the difficulty in telling the difference when comparing different manufacturing processes. Poybush appear to be market leaders according to this link but if you just buy these type of bushes from a supplier, there appears to be no way of knowing the quality. I can say that the dark blue ones (manufactures unknown) have lasted well(several years) I've just stripped my pick-up suspension to clean and repaint and they were in good order. Although I have no idea if all dark blue bushes are the same spec.Non the less i have replaced them with the polybush ones as a matter of course.

[PaulTubby]

yellow ones are the softest and red is the hardest ive found, yellow are the best, still got some give in them and still durable and last for years, only use red ones in eyebolt and ive examined a set recently thats been fitted for 12 years and still like new

[les]

This is what I'm trying to establish, yellow might be the softest from one manufacturer but do you know if this applies to other manufacturers of the same colour bush?

[ratrodmog]

I can confirm that yellow are indeed the softest bushes although I'm not sure how this varies between manufacturers. I have just replaced all of mine from red to yellow as the red, although still in perfect condition from fitting them 6 years ago, are just too hard and don't have any give in them. I believe the bushes are available in red, blue, green and yellow however they give no idication of shore hardness so could be a bit of trial and error.

[LouiseM]

This is what I'm trying to establish, yellow might be the softest from one manufacturer but do you know if this applies to other manufacturers of the same colour bush?

Different manufacturers use different colours for different density bushes (and you can also get them made to order in any colour you want). There is no 'industry standard colour' so if you buy bushes from different suppliers you need to check the density/application for the bush, not just assume that because they are the same colour they can be fitted to the same part.