Jag,
Could you post a pic? Or is the link already posted by DJ the type of light u are using?.....
I have a couple of ideas, but a picture would help.
1st – there are a number of high heat resist rubber seals that can be purchased to seal the area around the steel connection of the light. (I used some I bought from a pet store to seal the lights above my salt water aquarium. Both were cheap and lasted for a couple of years.)
2nd – depending on the space you could add a wire spacer that is wrapped around the bulb and takes up the space between the bulb and the housing. They are used in industrial applications to keep the bulb from moving and/or breaking against the side of the housing.
Just my 2 cents…….take care.
