USA Banner

Official US Government Icon

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure Site Icon

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

U.S. Department of Transportation U.S. Department of Transportation Icon United States Department of Transportation United States Department of Transportation

Interpretation Response #02-0302 ([Cytyc Corporation] [Jeffrey Joaquim])

Below is the interpretation response detail and a list of regulations sections applicable to this response.

Interpretation Response Details

Response Publish Date:

Company Name: Cytyc Corporation

Individual Name: Jeffrey Joaquim

Location State: MA Country: US

View the Interpretation Document

Response text:

Jan 23, 2003

Mr. Jeffrey Joaquim                 Reference No. 02-0302


Environmental Health and Safety

Cytyc Corporation

85 Swanson Rd

Boxborough, MA  01719

Dear Mr. Joaquim:

This is in response to your letter dated November 22, 2002 requesting clarification of the Hazardous Materials Regulations (HMR; 49 CFR Parts 171-180).  Specifically, you are asking if § 173.24 (f) (1) (ii) requires the closure on a one gallon plastic container to have a safety seal over or around its screw cap.

Section 173.24 (f) (1) (ii) states that closures on packagings shall be so designed and closed that under conditions normally incident to transportation they are secure and leakproof. There is no requirement in § i73.24 (f) (1) (ii) to attach a safety seal to a packaging that has been deemed secure and leakproof without a safety seal.  However, for transportation by aircraft, § 173.27 (d) requires each screw-type closure to be secured to such an extent that it will not loosen due to vibration or substantial temperature change.

I hope this satisfies your request.


John A. Gale

Transportation Regulations Specialist

Office of Hazardous Materials Standards


Regulation Sections

Section Subject
173.24 General requirements for packagings and packages