Viton Oil Seals..??

[J1MS]

New Viton oil seals are now available & have been for a while (Ive been lead to believe that different makes contain differing amounts of Viton).... Does anyone know what the advantages are over the standard original seals and what the original seals are made of (I thought they were normally, Nitrile or Buna) but Im not totally sure..?? Anyone..

[rog60]

Can't help much except that following advice from this forum bought the two inner crankshaft seals from MBD to replace blown Rolf seals. Easy to install.....don't know the percentage viton content.....maybe mark can help there..... seem to give a better seal.....more primary crank pressure...........

[corrado]

New Viton oil seals are now available & have been for a while (Ive been lead to believe that different makes contain differing amounts of Viton).... Does anyone know what the advantages are over the standard original seals and what the original seals are made of (I thought they were normally, Nitrile or Buna) but Im not totally sure..?? Anyone..

Do a search, I'm pretty sure that RinB posted a comprehensive list, re oil resistance, temperatures, etc. a few months ago when MB brought out Viton seals.

[rog60]

New Viton oil seals are now available & have been for a while (Ive been lead to believe that different makes contain differing amounts of Viton).... Does anyone know what the advantages are over the standard original seals and what the original seals are made of (I thought they were normally, Nitrile or Buna) but Im not totally sure..?? Anyone..

Try here:-

http://simplybearings.co.uk/shop/Seals- ... _info.html

[J1MS]

New Viton oil seals are now available & have been for a while (Ive been lead to believe that different makes contain differing amounts of Viton).... Does anyone know what the advantages are over the standard original seals and what the original seals are made of (I thought they were normally, Nitrile or Buna) but I'm not totally sure..?? Anyone..

Try here:-

http://simplybearings.co.uk/shop/Seals- ... _info.html

Thanks for that Rog... Ive been Googling.. Viton, Buna, Nitrile, Fluorocarbon and Silicone Rubbers... all I have found out is its got a greater temperature range and gives good protection against chemical attack.... But still cant compare directly as I'm not sure of the compound in the original seals... Im 99% sure the originals are Nitrile or Buna-N Rubber but I'm not 100% certain... These offer outstanding performance against petrochemical attack but have a lower operating temp but its a guess at the moment as to what to compare against... I will have to do a proper search armed with an original seal and the codes and a Viton seal and the codes on that... then compare.

This was one of the results of my searches...
http://www.epm.com/faq.html#QUESTION 1: Can you give me the general characteristics and properties of commonly used seals materials

thanks again for the reply

[CANbus]

I would be interested how the viton seals and crank perform together over time. The viton seal is a robust devil for sure, and I see viton seals that far outlast the running surface they are sealing against.
This is usually the result of prolong running at a given pressure resulting in a groove being edged into the sealing surface, and then they leak.
I’m not scare mongering here, as viton seals are more than likely ok. But I would sooner have the least expensive part fail first, namely the seal.
I believe there are two common compounds for Nitrile and Buna-N,70 and 90 shore. 90 shore being the hardest.

[Diablo]

T5 oils seals are Viton. As I understand it one of the properties is their increased resistance to additives in unleaded fuel.
Can't say I've noticed it being a problem with the old type of seal though.
Just fitted my first set in a Ts1 240 though so we'll see how they go.

[J1MS]

T5 oils seals are Viton. As I understand it one of the properties is their increased resistance to additives in unleaded fuel.
Can't say I've noticed it being a problem with the old type of seal though.
Just fitted my first set in a Ts1 240 though so we'll see how they go.

This was why I asked about the properties, Thats Nitrile/Buna versus Viton... as I am about to build up a TS1 for a mate and wanted to fit the best available... But there are no hard facts readily available and no direct comparisons Its pretty hard just finding the specs of the original seals... So I might try them in mine first before testing on someone elses engine... Just incase..!!

If anyone is working in the Industry and has any info they would like to share... Please do.

[corrado]

http://scooterotica.org/tempforum/viewt ... s&start=10

[CANbus]

quote]

If anyone is working in the Industry and has any info they would like to share... Please do.[/quote]

Try these guys, they would have the answers for you, I will see what I have at hand also.

http://www.hallite.com

I guess a particular point of interest on any rotating shaft seal is that they need to be stored correctly and have a limited shelf life (years) to deliver optimum performance.