The sealant is a hazardous substance. Please use extreme caution. See the attached Material Safety Data Sheets (MSDS) for information before opening.
All other components (“articles”) fall under the Occupational Safety and Health Communication Standard 1910.1200 which indicates at Section 1910.1200(b)(6) that, other than for the sealants used during Solatube® skylight installation, none of the other parts (“articles”) used in the Solatube® skylight pose a health risk and do not require a Material Safety Data Sheet. (See the Occupational Safety and Health Communication Standard 1910.1200 reference below.)

Occupational Safety and Health Communication Standard 1910.1200(b)(6)(v)
Paragraph c
"Article" means a manufactured item other than a fluid or particle: (i) which is formed to a specific shape or design during manufacture; (ii) which has end use function(s) dependent in whole or in part upon its shape or design during end use; and (iii) which under normal conditions of use does not release more than very small quantities, e.g., minute or trace amounts of a hazardous chemical (as determined under paragraph (d) of this section), and does not pose a physical hazard or health risk to employees.