Where to get 100% silicone?

[Gerrydelasel]

Does anyone know where I can get 100% silicone? Most selants seem to be quick dry (which is not 100% silicone) or else they don't specify.

 

[foxhole]

Sealants are a compound, not 100% of anything.

 

[DIY640]

What are you using it for? Just sealing?

 

[Gerrydelasel]

Heh, no I want to use it as a cheap alternative to moulding rubber, for making duplicates of objects. Apparently the method works best with 100% silicone.
This is what they can buy in America:

 

[freddiemercurystwin]

Surely you want Silicone moulding rubber then? eg http://www.ebay.co.uk/sch/i.html?_o...er.TRS0&_nkw=silicon+moulding+rubber&_sacat=0

 

[Gerrydelasel]

No, I want builders silicone as a cheap alternative. It's a thing. Don't ask....

EDIT: Obviously silicone is a thing, but what I mean is making moulds out of builder's silicone is a thing, popular on craft websites and so forth.

 

[freddiemercurystwin]

OK I won't ask. And won't bother contributing anymore.

 

[endecotp]

The american product called "100% silicone" is not 100% anything; it's just a brand name.

See the list of ingredients on page 2 of this document:

https://www.reddevil.com/sku-docs/sds-0816-0826.pdf

 

[Gerrydelasel]

The american product called "100% silicone" is not 100% anything; it's just a brand name.
https://www.reddevil.com/sku-docs/sds-0816-0826.pdf

Aha, now we're getting somewhere, thanks for the heads up!

 

[Chud]

As far as silicone goes you're probably best off starting with Dow Corning http://www.geocel.co.uk/catalogue/brands/dow-corning-7-series

781 gets used on fish tanks etc as it has no anti-mould ingredients so maybe what you're after...

Not sure how many of those are low modulus though 781 certainly is high modulus.

 

[bourbon]

By the time you have messed about, you may as well get the proper stuff from
http://dwrplastics.com/ And you will need some Lego as well!
I cast Pewter and I use Danny's stuff all the time