46 C.F.R. § 64.23 Gasket and lining.
Title 46 - Shipping
Each gasket and lining must be made of material that is— (a) Chemically compatible with the product for which the tank is approved; and (b) Resistant to deterioration from the product for which the tank is approved.
Title 46: Shipping
PART 64—MARINE PORTABLE TANKS AND CARGO HANDLING SYSTEMS
Subpart B—Standards for an MPT
§ 64.23 Gasket and lining.