Requirements:

Transport of Human Remains

1. Certified copies of Death certificate (2)
2. Burial/Transit Permit with raised seal
3. Passport of decedent
4. Embalmer's affidavit
5. Letter of non-contagious disease from State or County official on official letterhead
6. Funeral home letter stating: 1) only remains are inside the casket 2) flight itinerary; 3) consignee's name, address, and telephone number;
7. If death was an accident or a suicide, they require a copy of the police report
8. No casket requirements
9. Zinc-lined wood box, not a screw down
10. Consulate wants to witness sealing
11. No consulate fees

Transport of Cremated Remains

1. All above documentation
2. Metal Urn (plastics not acceptable)

Consulates: http://www.state.gov/s/cpr/rls/fco/164214.htm#srilanka

Embassy: http://www.slembassyusa.org/