seal packing?
 

hey guys, going to be putting my head back on soon and needed some info. It shows me several places where i'm supposed to be puttins 'seal packing' and I need to know what they mean by seal packing. any help appreciated, thanks.

I never could work our why they recommend applying the sealant at the front of the block when the gasket covers all the water and oil galleries.Link. I can understand having the sealant under the front camshaft caps which would prevent any oil tracking under the caps and running down the front of the block. Link

Thanks for the reply bill. I do believe I already have the silicone gasket, wasn't sure thats what it was calling for... thanks!