White, ribbed, continuous thread cap with 30MM neck finish and a heat induction liner. 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. Heat induction liners are an important aspetc. of every continuous thread cap. Commonly used for pharmaceutical, food and water-based products. Made of pulp (paper material), wax, foil and a polymer coating. An induction machine is required to apply the liner. Induction liners are a great choice when you need an air tight seal and come in a variation. Products should best tested with the cap to determine which liner will be the best fit.