What is that I googled it in the UK and nothing came up ... I'm guessing it's like some sort of a glue plaster????

If so it may depend on the wound .... I think the docs hoping mine stays open rather than stitching it as there's still gravel in the wound as it's deep and they're hoping it'll work it's way out rather than staying in and causing an infection which could possibly lead to Sepsis.

Something that seals a wound in that sort of situation could maybe trap debris in and potentially be fatal????