Gold, metal shelled, smooth, continuous thread cap with 70-400 neck finish and a foam liner. Commonly used for household, cosmetic, food and other water-based products. Continuous thread caps are popular in a wide range of wholesale industries from food, personal care, pet care, household products, industrial products, health and beauty, arts, crafts, hobbies and just about any other market segment. This polypropylene (PP) cap has a high tolerance for heat and is very durable. Foam liners are compatible with many substances, an economical option and can also be used to take up room on the top of the cap when the thread of the neck is not high enough to achieve a tight closure. Liners are an important aspetc. of every continuous thread cap and products should best tested with the cap to determine which liner will be the best fit. Foam liners do not create airtight seals.