# Liquid rubber polyurethanes

**URL:** <https://forum.formlabs.com/t/liquid-rubber-polyurethanes/23172>\
**Category:** General Discussion\
**Created:** [April 25, 2019, 5:05pm UTC](https://forum.formlabs.com/t/liquid-rubber-polyurethanes/23172 "2019-04-25T17:05:54Z")\
**Posts on this page:** 1\
**Showing post:** 9

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**Author:** ![budioli](https://avatars.discourse-cdn.com/v4/letter/b/e5b9ba/32.png) [@budioli](https://forum.formlabs.com/u/budioli)\
**Post date:** [May 2, 2019, 4:14pm UTC](https://forum.formlabs.com/t/liquid-rubber-polyurethanes/23172/9 "2019-05-02T16:14:00Z")

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Thanks both of you 👍

I am a little confused about the differences (of if there are any at all) between rubber urethanes and silicones, in terms of safeness for prolonged skin contact?

@Sculptingman are these shore a60/70 silicones suitable for prolonged use on skin? If so, they could be perfect:+1:

Thanks again,

Dan

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