INTRODUCTION:
Self-lubricating bearings are an excellent choice for a variety of applications. They outperform other types of bearings in environments that are dirty or involve higher temperatures, handle high load capacities, and require less maintenance.
There are three types of self-lubricating bearings: oil-impregnated sintered metal, self-lubricating metal-polymer, and lubrication-free solid polymer.
Here are additional list blog posts here at Advanced EMC Technologies on Polymer Bearings:
INTRODUCTION:
The two main parts of a rotary shaft seal are a rigid outer case and the flexible sealing lip (typically made of an elastomeric material). The outer case provides the stiffness and structure needed to keep the seal stable, and protects the lip during installation.
A popular choice for the sealing lip is PTFE, better known as Teflon. Its chemical compatibility, low friction, and outstanding performance at high speeds have made it a favorite among engineers. However, what is the best case material to combine with a PTFE lip for rotary shaft seals?
Cryogenic seals provide a mechanical containment mechanism for materials held at cryogenic
temperatures, such as cryogenic fluids. Various techniques, including soldering and welding are available for creating seals, however specialized materials and processes are necessary to hermetically entrap cryogenic constituents under vacuum-tight conditions. Most commonly used are liquid helium and liquid nitrogen, which boil at very low temperatures, below -153 °C (120 K), as well as hydrocarbons with low freezing points and refrigerating mixtures. – information from Wikipedia.com.
The demand for seals for use in cryogenics applications is increasing, and there are certain facts about them that all engineers should now. Here are six things you should know about cryogenic seals…
Elastomeric seals have potential disadvantages: chemical attack, swelling, degradation, heat aging, compression set, and high friction. However, the addition of a spring and the careful selection of an elastomer can virtually eliminate many of these problems.
Spring-energized seals have a U-shaped groove in which a corrosion-resistant metal spring (usually made of stainless steel) is placed. Once the seal is seated in the gland, the spring is compressed and applies a force on the gland that seals the surfaces. This creates a tight barrier to prevent leakage of gas or fluids. A common material used with spring-energized seals is Polytetrafluoroethylene, referred to as PTFE or Teflon. This polymer further enhances the properties of spring-energized seals. In fact, there are five specific benefits to energized PTFE seals!
INTRODUCTION:
The first bearings recorded in history were likely made of wood or bronze, but modern engineers 
can choose from a variety of materials ranging from classical choices such as stainless steel to various types of polymers. One modern (and fascinating) bearing material is PEEK. In this article, we will look at five specific characteristics of PEEK that have allowed it to evolve as a popular material for bearings.
Polyether ether ketone (PEEK) is a colorless organic thermoplastic polymer in the polaryletherketone (PAEK) family, used in engineering applications. Polyetherketone (PEK) and Polyertheretherketone (PEEK) are durable high performance engineered plastics whose structures combine both ether and ketone groups. High performance engineered plastics like PEEK plastic products outperform metals in 5 key areas in cutting-edge engineering technology.
Get the full PEEK Plastic vs Metal powerpoint presentation at the end of the post.
Engineed plastics technology so advanced that it replaces steel, aluminum, brass, bronze and other metals providing product design and manufacturing solutions never thought possible before.
PTFE the acronym for polytetrafluoroethylene, created quite by accident has become one of mankinds most revolutionary inventions. Polytetrafluoroethylene is a synthetic chemical compound best defined as any polymer, plastic or resin having the formula (C 2 F 4) n, prepared from tetrafluoroethylene — a colorless, water soluble, flammable gas.
Noted for its slippery, nonsticking properties polytetrafluoroethylene (PTFE) is most commonly associated with cookware and products under the 1945 Kinetic Chemicals patented trademark Teflon®. While this revolutionary chemical compound opened the door in the retail market for cookware, it has blown the doors off of industrial and technological applications. What is so remarkable is this door of serendipity opened quite by accident at the DuPont labs in 1938.
In 1938, while working for DuPont Corporation in New Jersey, Chemist Dr. Roy Plunkett was attempting to make a new chlorofluorocarbon (DuPont brand name Freon®) refrigerant. When he and his associates were checking a frozen, compressed sample of tetrafluoroethylene they discovered that the sample had spontaneously polymerized into this white, waxy solid form later called polytetrafluoroethylene (PTFE).
According to the DuPont Corporation, PTFE is inert to virtually all chemicals and considered the
most slippery material in existence. These properties have made it one of the most valuable and versatile technologies ever invented, contributing to significant advancements in areas such as aerospace, communications, electronics, industrial processes and architecture.
Advanced EMC knows how demanding certain industries can be when it comes to their sealing needs and requirements and failing to provide reliable solutions could heavily affect their production or delivery of their services. And that is the reason we came up with our extensive line of advanced polymer seals that are able to meet some of the toughest and most sensitive demands one can think of.
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Advanced EMC knows how demanding certain industries can be when it comes to their sealing needs and requirements and failing to provide reliable solutions could heavily affect their production or delivery of their services. And that is the reason we came up with our extensive line of advanced polymer seals that are able to meet some of the toughest and most sensitive demands one can think of.