Generally, PTFE gasket specifications are defined by inner diameter + outer diameter + thickness. The following manufacturing methods are available: 1. Machining from extruded PTFE tubing via lathe turning to achieve the required thickness—suitable for small dimensions and small-batch production. 2. Cutting from PTFE sheets of predetermined thickness—suitable for small, medium, and large dimensions, as well as small-batch production. 3. Compression molding using dedicated dies—suitable for small, medium, and large dimensions, as well as high-volume production.

(1) Thermoplastic Resins: These resins exhibit the property of softening upon heating and hardening upon cooling, without undergoing any chemical reaction. This behavior remains unchanged regardless of how many times the heating and cooling cycles are repeated. All thermoplastic resins possess a linear molecular structure. They include both addition polymers and certain condensation polymers. Examples of thermoplastic resins are:

Plastics can be classified into single-component and multi-component types. Single-component plastics contain only the essential synthetic resin required for the plastic material. For instance, organic glass (polymethyl methacrylate, or PMMA) is a single-component plastic made solely of PMMA resin. In contrast, most plastics consist not only of synthetic resins but also include fillers, hardeners, colorants, and other additives.

The fundamental distinction between plastics and rubber lies in the fact that plastics undergo plastic deformation when subjected to stress, whereas rubber exhibits elastic deformation. In other words, after deformation, plastics do not readily return to their original shape, while rubber recovers its original shape much more easily. Differences Between Plastics and Rubber In simple terms: The fundamental distinction between plastics and rubber lies in the fact that plastics…