(a) Types of merchandise. Any merchandise subject to duty may be entered for warehousing except for perishable merchandise and explosive substances (other than firecrackers). Dangerous and highly flammable merchandise, though not classified as explosive, shall not be entered for warehouse without the written consent of the insurance company insuring the warehouse in which the merchandise is to be stored.

(b) [Reserved]

(c) Merchandise previously entered. If merchandise has been entered under other than a warehouse entry and has remained in continuous Customs custody, a warehouse entry may be substituted for the previous entry. If estimated duties were deposited with the superseded previous entry, that entry shall be liquidated for refund of the estimated duties without awaiting liquidation of the warehouse entry. All copies of the warehouse entry shall bear the following notation: This entry is in substitution of _______________________; entry No. ____________, dated ________________________.

The importer of merchandise entered for warehouse is liable for the payment of all unpaid duties not only as principal on the bond filed on Customs Form 301, containing the bond conditions set forth in § 113.62 of this chapter, but also by reason of his personal liability as consignee. Under the conditions of the bond, the sureties on the bond shall be held liable for the payment of duties and Customs charges not paid by the principal on the bond, whether such duties and charges are finally ascertained before the merchandise is withdrawn from Customs custody or thereafter. Liability may be transferred in part along with the right to withdraw the merchandise, in accordance with Subpart C of this part.

No abatement or allowance of duties shall be made on account of damage, loss, or deterioration of the merchandise while in warehouse, except as provided for by law (see part 158 of this chapter).

Allowance in duties shall be made for merchandise in warehouse which is abandoned or destroyed in accordance with § 158.43 of this chapter or exported in accordance with § 144.37.

Merchandise must not remain in a bonded warehouse beyond 5 years from the date of importation or such longer period of time as the Center director may at his discretion permit upon proper request being filed and good cause shown.

Merchandise remaining in a bonded warehouse after the expiration of the warehousing period shall be disposed of in accordance with § 127.14 of this chapter.