English Deutsch Français Italiano Español Português 繁體中文 Bahasa Indonesia Tiếng Việt ภาษาไทย
All categories

2007-07-03 15:30:07 · 2 answers · asked by Anonymous in Science & Mathematics Engineering

2 answers

Until they fall apart. Are you refering to the old-fashioned insulators? The old glass ones would essentially last until broken; the somewhat newer ceramic ones would, when really old, start to crumble; the same with the older plastic ones. After awhile, they would "dry out" and crumble.

2007-07-03 15:39:10 · answer #1 · answered by Nothingusefullearnedinschool 7 · 1 0

If you are talking about the glass bell insulators -- then for ever.

2007-07-03 22:32:36 · answer #2 · answered by Anonymous · 0 0

fedest.com, questions and answers