7530 Virgin PTFE
7530 Style Gaskets are made of polytetrafluoroethylene which is a high molecular weight polymer and one of the most versatile plastics known to man. Virgin PTFE sheet can handle virtually all chemicals in the 0-14 pH range with the exception of molten alkali metals and elemental fluorine. It is suitable for service at temperatures from the cryogenic range up to 500 Degrees F. Sur-Seal, Inc. 7530 is particularly recommended for applications in the food and beverage industry where high purity materials are required. It is also used where contamination or discoloration of flow media cannot be tolerated. The coefficient of friction of plastics is usually measured against polished steel. PTFE's resistance to van der Waals forces means that it is the only known surface to which a gecko cannot stick. In fact, PTFE can be used to prevent insects climbing up surfaces painted with the material and is so slippery, that insects cannot get a grip and tend to fall off. For example, PTFE is used to prevent ants climbing out of formicaries. Because of its superior chemical and thermal properties, PTFE is often used as a gasket material. PTFE sheets are used in the production of butane hash oil due to its non-stick properties and resistance to non-polar solvents. Its high corrosion resistance makes PTFE useful in laboratory environments, where it is used for lining containers, as a coating for magnetic stirrers, and as tubing for highly corrosive chemicals such as hydrofluoric acid, which will dissolve glass containers. It is used in containers for storing fluoroantimonic acid, a superacid. In industrial applications, owing to its low friction, PTFE is used for applications where sliding action of parts is needed: plain bearings, gears, slide plates, etc. In these applications, it performs significantly better than nylon and acetal; it is comparable to ultra-high-molecular-weight polyethylene. Its extremely high bulk resistivity makes it an ideal material for fabricating long-life electrets.