- An inner liner of asphaltum impregnated jute fibre tubing to protect conductors
- Female ends with removable zinc plated steel nipples standard on all couplings
- Union type couplings may be assembled by adding a GUF Series union to the nipple
- UL File No. E10514|CSA File No. LR11716, Class I Group A, B, C, D, Class l Zone 1, Group, llC, llB, llA, Class II Div 1, 2, Group E, F, G, Class lll
- Used in hazardous areas where movement or vibration requires a flexible connection or a difficult bend is required in a conduit system