Marking Function: Various patterns, words and logos can be printed to facilitate consumers to identify product brands, specifications, production date and other information. At the same time, it also helps enterprises to carry out brand promotion and product anti-counterfeiting.
Decorative effect: Through different colors, shapes and designs, it can add beauty and attraction to the products. Some high-end products have beautifully designed rubber caps, which become an important part of the product packaging.

Variety of shapes
The shape of rubber caps is usually designed according to the shape of the container mouth. Commonly, there are round caps, which are used for most standard bottle containers, such as wine bottles, medicine bottles, etc.; there are also square caps, which are used for some specially designed containers with square bottle mouths. In addition, some caps have special shapes, such as petal-shaped or three-dimensional decorations on the top, which are used to improve the aesthetics of the products.
Size
Cap sizes vary depending on the application. The inside diameter needs to match the outside diameter of the container exactly to ensure a tight fit. Small caps may have an inner diameter of only a few millimeters and are used for small reagent bottles; large caps may have an inner diameter of dozens of millimeters and are used for large diameter containers, such as large cooking oil bottles.

In our daily life, although the rubber cap is inconspicuous, but it has many important features and plays an unignorable role.
First of all, the rubber cap has excellent sealing. It is like a loyal guard, tightly guard the mouth of the container, the outside world of air, moisture and dust, etc. to keep out. Whether it is a precious wine, an important medicine or a delicate cosmetic, the cap ensures that its contents are not contaminated and that the quality remains stable. For volatile liquids, rubber caps can effectively prevent them from evaporating, so that the value of the product can be preserved for a long time.

Plastic bottle stoppers are bottle stoppers made of plastic materials (such as polyethylene or polypropylene) and are widely used in the packaging of various beverages, foods and medicines. Compared with traditional wooden stoppers, plastic bottle stoppers have many unique advantages.
Plastic bottle stoppers are widely used in:
Non-alcoholic beverages such as carbonated beverages and juices
Foods such as edible oils and condiments
Daily products such as medicines and cosmetics
In short, plastic bottle stoppers have become an indispensable part of modern packaging due to their excellent performance and economy.

Polymer cork is a sealing device made of polymer materials such as polyethylene, polypropylene, or polyvinyl chloride, widely used in bottled beverages, pharmaceuticals, cosmetics, and other fields. Compared with traditional natural stoppers, polymer stoppers have better sealing, corrosion resistance, and consistency, which can effectively prevent the infiltration of oxygen and moisture and extend the shelf life of products.
The production process of polymer cork is flexible, and its physical and chemical properties can be adjusted according to different needs. In addition, they usually have good mechanical strength and temperature resistance, adapting to various environmental conditions.
In terms of environmental protection, many polymer cork materials can be recycled and reused, which meets the requirements of sustainable development. With the development of technology and advances in materials science, the application areas and properties of polymer stoppers are constantly expandi

The T-cork is a specially designed bottle stopper that is shaped like the letter "T" and is mainly used for bottled beverages, especially certain types of alcohol. Its design makes it more stable when plugged into the bottle mouth, which helps to enhance the seal and prevent leakage.