(38/400) Black CRC (Child Resistant Cap) with printed (SFYP) HS (Heat Seal) Liner.  This 38/400 child-resistant cap features a heat seal liner with special equipment needed to seal this liner to the bottle opening. You can purchase this HAND-HELD PORTABLE HEAT INDUCTION SEALER and it’s on sale, too! Child-resistant caps have a locking mechanism for added security, meeting regulatory standards. The foamed polystyrene liner adheres to the bottle’s orifice, ensuring product integrity. Crafted from Polypropylene, this cap offers high heat tolerance and durability, fitting our packer bottles with a 38/400 neck finish. This child-resistant cap enhances safety and product security, ideal for pharmaceutical, chemical, and household industries. This cap meets stringent safety requirements.