Lamp Base and Electric Lamp

A lamp base having at least one power supply line (16) and sealing means for sealing off the lamp base in the region of the at least one power supply line (16), with the sealing means including at least one of features A, B and C,

• wherein feature A comprises an elastomer (161) or rubber, which surrounds a section (16a) of the at least one power supply line (16) in an interlocking manner and annularly, this section of the at least one power supply line (16) which is surrounded by the elastomer (161) or rubber being embedded in a plastic injection-molded part (15) of the lamp base in an interlocking manner,
• wherein feature B comprises a surface region of the at least one power supply line (716;
• 516), which is provided with a profile (7161) or a roughened portion (5161), this region of the at least one power supply line (716;
• 516) being embedded in a plastic injection-molded part (15) of the lamp base in an interlocking manner, and
• wherein feature C comprises a section of the at least one power supply line (916) which is provided with slits (9161), this section of the at least one power supply line being embedded in a plastic injection-molded part (15) of the lamp base in an interlocking manner.