MEETOOT 36PCS M28 Transparent Plastic Inner Stopper Sealed Threaded Plug Suitable for Daily Chemicals Food Cosmetics

Product specification details Product name: Transparent plastic inner plug for 28-thread screw cap (M recessed plug) Core function: Sealing Thread specification: M28 (Compatible with 28-thread international standard screw caps) Inner plug diameter: Approx. 18.3 mm (This is a critical dimension, please verify with actual measurements) Product material: Food-grade PP (Polypropylene) Product colour: High transparency Structural design: Recessed M-shaped structure (Recessed design) for enhanced elasticity Packaging quantity: 36 pieces per pack Specification details and application notes Regarding M28 and 18.3mm: M28 denotes the thread specification of the bottle cap, which is the primary criterion for cap selection. Approximately 18.3mm denotes the outer diameter of this inner insert itself. This dimension determines whether it can be securely fitted into the interior of an M28 bottle cap. Core specification confirmation: To ensure 100per cent compatibility, it is strongly recommended that you: Confirm your bottle cap: The internal diameter of your screw cap must be greater than or equal to 18.3mm for this inner insert to fit. Measure your bottle neck: This inner insert is designed to seal in conjunction with an M28 cap. Please ensure your bottle neck's external diameter is compatible with the M28 cap. Material advantages: The selection of PP material ensures the inner insert possesses the necessary hardness, elasticity, and chemical inertness. It is highly suitable for packaging aromatherapy products, cosmetics, non-corrosive liquids, and food/beverage items.

• Precision dimensions, universal compatibility: Strictly adhering to the 28-thread international screw thread standard, the inner plug diameter is precisely calibrated to approximately 18.3mm. This ensures seamless compatibility with the vast majority of 28-thread screw caps available on the market, making it widely applicable for various glass packaging applications such as fragrance bottles, beverage bottles, and sauce bottles.
• Food-grade PP material, safe and worry-free: Manufactured from premium food-contact-grade PP (polypropylene) raw material, non-toxic and odourless, with stable chemical properties. It does not react with stored contents (such as essential oils or beverages), ensuring the safety and purity of the contents.
• Optimised for screw caps, sealing system: A critical component, this product is specifically engineered as the core sealing element for screw caps. Working in tandem with the cap assembly, it significantly enhances the airtight integrity of the entire closure system. This is essential for preserving the freshness of contents, preventing pressure loss in carbonated beverages, and safeguarding against aroma dissipation.
• High transparency for a premium aesthetic: The inner stopper is entirely crystal-clear, allowing unobstructed visibility of the contents within the bottle. This perfectly preserves the sophisticated appearance and visual clarity of the product packaging, thereby enhancing brand image and consumer trust.
• Practical 36-piece pack: Suitable for a wide range of uses including fragrance diffusers, glass condiment bottles, cosmetic refill containers and handmade DIY vessels. Offers multiple advantages including leak-proof sealing, odour-free safety and convenient contents visibility.