BU - Bulkhead Union | Parker TrueSeal™
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| Gray Acetal EPDM Seal |
White PPL EPDM Seal |
Natural Kynar Fluorocarbon Seal |
Nom Tube O.D. |
C1 Hex |
C2 Hex |
L |
P |
D |
BKHD Drill Size |
| A4BU4-MG | PP4BU4 | F4BU4 | 1/4 | 15/16 | 15/16 | 1.50 | .50 | .175 | 7/8 |
| A5BU5-MG | - | F5BU5 | 5/16 | 1-1/16 | 1-1/16 | 1.75 | .62 | .188 | 1 |
| A6BU4-MG | PP6BU4 | - | 3/8-1/4 | 1-1/16 | 1-1/16 | 1.75 | .62 | .175 | 1 |
| A6BU6-MG | PP6BU6 | F6BU6 | 3/8 | 1-1/16 | 1-1/16 | 1.75 | .62 | .250 | 1 |
| A8BU8-MG | - | F8BU8 | 1/2 | 1-1/4 | 1-1/4 | 2.04 | .70 | .375 | 1-1/8 |
