Maybe. I have searched high and low without much success, BUT did recently find an online seller for the left one, but not the right one, plus there was a note that "this vintage part may require an additional charge per order". I didn't pull the trigger, as I recall it as going to be around $30 + S&H for a single rubber welt.
None of the Asian imported lights that come with that rubber last any length of time, like an idiot I didn't pull both of my OEM ones when I changed to sport lamps (non OEM). I have the original LH one right here in my hand, the part number is 55076747, unsure of RH part number.
It appears the OEM part was made by Wagner, but I haven't had any success searching for these welts at Wagner either.
SHG