Bouchon ICMA 87201AE06 1 / 2" F - 3 / 4" F - 1" F - 1 - 1 / 4" F

Blind end cap from ICMA, part number 87201AE06, with female thread sizes 1/2 inch, 3/4 inch, 1 inch, and 1-1/4 inch. Used to seal pipe ends in burner systems.