Dixon GJ Boss™ Ground Joint Seal


Description   Photograph
Female/Male/Double Spud - Complete Female - Stem - Wingnut - Knurled Nut  
Dixon GJ Boss™ Ground Joint Seal
Coupling CategoryManufacturer 
Boss Couplings Dixon - Boss Fittings 

Positive Metal-to-Polymer Seal

  • A leakproof seal is formed when the metal head of the stem
    makes contact with the patented polymer seat in the spud.
  • The non-metallic polymer seat resists most chemicals found
    in manufacturing facilities
  • easy to seal
  • works with existing fittings
  • plated steel and / or iron
  • use with Boss clamps
  • recommended for steam service up to 450°F Safety Alert - Hose, Couplings, and Hose Assemblies


Hose Shank x NPT (in) Complete Female Part # Stem Part # Wing Nut Part # Knurled Nut Part #
1/4 GF1 1  GBA SLS4 -
3/8 GF3 1 GCA CB -
1/2 GF6 GB1 B2 -
1/2 x 3/4 GF26-1 GB6-1 B12 -
3/4 GF26 GB6 B12 KB12
1 GF36 GB11 B12 KB12
1-1/4 GF51 GB16 B17 -
1-1/2 GF61 GB21 B17 -
2 GF81 2 GB26 2 B27 -
2-1/2 GF96 GB31 B32 -
3 GF111 GB36 B37 -
4 GF141 GB46 B47 -
6 GF201 1 GB66 B67 -
1  1/4", 3/8" and 6" come only with copper seat spuds
2  not to be used with #250, #275 or #306 Boss clamps Safety Alert - Hose, Couplings, and Hose Assemblies


Thread (in) Female Spud Part # Male Spud Part # Double Spud Part #
1/4 GBC 1 - -
3/8 GCC 1 GMC 1 -
1/2 GB3 GM3 GDB3
3/4 GB8 GM8 GDB13
1 GB13 GM13 GDB13
1-1/4 GB18 GM18 GDB23
1-1/2 GB23 GM23 GDB23
2 GB28 GM28 GDB28
2-1/2 GB33 GM33 GDB33
3 GB38 GM38 GDB38
4 GB48 - -
6 GB68 1 - -
1  1/4", 3/8" and 6" come only with copper seat spuds

Safety Alert - Hose, Couplings, and Hose Assemblies  Boss couplings and the steam quick disconnects are the only Dixon couplings recommended for steam service.