ΔE 28.4, loose: different enough that you should pick on purpose. Seraph Red is noticeably darker, cooler than Gore-Grunta Fur.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 28). Seraph Red is noticeably darker, cooler than Gore-Grunta Fur.
The same difference applies the other way round: Gore-Grunta Fur is noticeably lighter, warmer.
ΔE is the colour difference between our two swatch estimates: under about 6 is close, over about 15 is loose. Real paints also differ in finish, coverage and how they thin, so test before you commit.
See Gore-Grunta Fur on the colour wheel See Seraph Red on the colour wheel
All matches: Gore-Grunta Fur equivalents · Seraph Red equivalents