Comparison : Item # 11-012-0-WR526-AAAH, 11 Series 12 Millimeter (mm) Nominal Bore Diameter Self-Sealing Coupling (518°F max)
Item # 11-012-0-WR526-AAAG, 11 Series 12 Millimeter (mm) Nominal Bore Diameter Self-Sealing Coupling (590°F max)
Item # 11-012-2-WR526-AAAA, 11 Series 12 Millimeter (mm) Nominal Bore Diameter Self-Sealing Adapter (590°F max)
Item # 11-019-0-WR533-AAAH, 11 Series 19 Millimeter (mm) Nominal Bore Diameter Self-Sealing Coupling (518°F max)
Item # 11-019-0-WR533-AAAI, 11 Series 19 Millimeter (mm) Nominal Bore Diameter Self-Sealing Coupling (590°F max)