Density of teflon and delron

We were thinking about using some teflon and delron in our design, but I couldn’t find out densities for these materials. Small Parts says that delron is light and robust, but doesn’t give the density…
If anyone knows the densities (or just one of them), please post them asap because we’re trying to get the order out today - shipping is getting really close…
Thanks in advance

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Thanks for the tip, the page is really good. I think there is hardly any material that you can’t find data of on it.