I use Lee Valley's tung oil sealer to bring out the grain sometimes. I found that the Bloxigen nozzle will cause the sealer to spatter out if I am not careful.
I cut the nozzle insert down to 2 inches then inserted it in a section of plastic drinking straw, sealing it with hot melt glue. This lowers the blast speed and prevents spattering.
See picture in ABPW.