Substance material instancing, duplicate question

Hi,
I’m very new to Unreal but I’m very familiar with the Substance suite of tools.
I want to apply a substance material to multiple instances of the same asset.
When I change the seed of my material its noise break up changes. It becomes a different version of the same texturing.
How do I create multiple copies of a Substance material so that my assets look like different.
Think multiple oil barrels all with similar but different grime breakup but only 1 Substance material is loaded into memory.
Any help would be greatly appreciated.
Gavin