A lamp device for thermal processing of a substrate is provided. The lamp device includes a bulb enclosing a filament, the filament having a pair of leads. The lamp device further includes a lamp base. The lamp base includes a seal connecting the bulb to the lamp base; a sleeve having one or more walls and two ends with one end surrounding the seal; a potting compound filling the sleeve; one or more wires distributed through the sleeve and the potting compound and coupled to the pair of leads; and one or more hookable features located within 10 mm of the sealing end.