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The purpose of RFI and EMI contacts, fingerstock, and gaskets is to provide effective electromagnetic shielding for electrical equipment. These components are designed to be used as part of an overall shielding system, and are used to achieve a higher level of electrical noise reduction than conventional shielding alone would provide.

Electromagnetic interference shielding uses materials that are designed to prevent the penetration or transfer of electromagnetic fields, often referred to as electromagnetic fields (EMF). The materials used are typically conductive metals, but can also include materials such as plastic or rubber. Effective shielding requires that the shield must be continuous, aligned with the source of the electromagnetic field, and shaped to allow for an efficient transfer of the field.

Fingerstock is used to provide contact between various components of shielding systems to create a continuous electromagnetic field around the electrical equipment. Fingerstock is made from a variety of conductive materials such as copper, stainless steel and other alloys. The shape of the fingerstock can vary depending on the size and shape of the components that need to be shielded. Fingerstock is also designed to be easy to install and can be used with both round and flat components.

Gaskets are used to create a seal between various parts of a shielding system in order to prevent any gap or air space between them. Gaskets are typically made of materials that provide elasticity, such as rubber and silicone, and are designed to create a tight fit when the components are connected. Gaskets can also be used to provide an insulation barrier between the various parts of the system, such as preventing the flow of electromagnetic energy between the various elements.

Finally, contacts are used to create a connection between two components of a shielding system. These contacts are typically conductive and are usually used to create an electrical connection between one component of the shield to another. Contacts are typically made of copper or other metals and are designed to be reliable and durable.

In conclusion, RFI and EMI components, such as contacts, fingerstock, and gaskets, are designed to provide an effective solution for shielding against electromagnetic interference. These components are designed to be used together in an overall shielding system, and are designed to be easy to install and durable. It is important to choose the proper components for the job, as different materials and shapes will create different levels of shielding.