Polytetrafluoroethylene (PTFE) is a synthetic fluoropolymer of tetrafluoroethylene that has numerous applications. The commonly known brand name of PTFE-based formulas is Teflon by Chemours, a spin-off from DuPont, which originally discovered the compound in 1938. Another popular brand name of PTFE is Syncolon by Synco Chemical Corporation.
An end-face mechanical seal, or a mechanical end-face seal, also referred to as a mechanical face seal but usually simply as a mechanical seal, is a type of seal used in rotating equipment, such as pumps, mixers, blowers, and compressors. When a pump operates, the liquid could leak out of the pump between the rotating shaft and the stationary pump casing. Since the shaft rotates, preventing this leakage can be difficult. Earlier pump models used mechanical packing to seal the shaft. Since World War II, mechanical seals have replaced packing in many applications.
An O-ring, also known as a packing or a toric joint, is a mechanical gasket in the shape of a torus; it is a loop of elastomer with a round cross-section, designed to be seated in a groove and compressed during assembly between two or more parts, creating a seal at the interface.
A hermetic seal is any type of sealing that makes a given object airtight. The term originally applied to airtight glass containers, but as technology advanced it applied to a larger category of materials, including rubber and plastics. Hermetic seals are essential to the correct and safe functionality of many electronic and healthcare products. Used technically, it is stated in conjunction with a specific test method and conditions of use.
Smiths Group plc is a British multinational diversified engineering business headquartered in London, United Kingdom. It has operations in over 50 countries and employs around 23,550 staff. Smiths Group is listed on the London Stock Exchange and is a constituent of the FTSE 100 Index.
Nadcap is a global cooperative accreditation program for aerospace engineering, defense and related industries.
Sealant is a substance used to block the passage of fluids through the surface or joints or openings in materials, a type of mechanical seal. In building construction sealant is sometimes synonymous with caulking and also serve the purposes of blocking dust, sound and heat transmission. Sealants may be weak or strong, flexible or rigid, permanent or temporary. Sealants are not adhesives but some have adhesive qualities and are called adhesive-sealants or structural sealants.
Metal bellows are elastic vessels that can be compressed when pressure is applied to the outside of the vessel, or extended under vacuum. When the pressure or vacuum is released, the bellows will return to its original shape, provided the material has not been stressed past its yield strength. They are used both for their ability to deform under pressure and to provide a hermetic seal that allows movement.
Garlock Sealing Technologies, a subsidiary of EnPro Industries, produces Klozure Dynamic Seals and other sealing products. Garlock has a global presence, with 1,887 employees, at 14 facilities, in twelve countries.
UTEX Industries, Inc. is an American manufacturer of sealing products.
John Crane is an American company, now a subsidiary of Smiths Group and provider of engineered products and services including mechanical seals, couplings, hydro-dynamic bearings, seal support systems, filtration systems and artificial lift. The company services customers in the energy services sector including production, transmission and storage, refining, power generation, petrochemical, pulp and paper, and mining industries.
FFKMs are perfluoroelastomeric compounds containing an even higher amount of fluorine than FKM fluoroelastomers.
Hutchinson is a manufacturer with its headquarters located in Paris, France. It is a subsidiary of Total SA. In 1853, the company was founded by Hiram Hutchinson in the city of Châlette-sur-Loing, in Central France. It has more than 44,000 employees in 24 countries. Hutchinson offers products for aerospace and automotive industries as well as rail, construction, industry, and defense. It is the third largest non-tire rubber manufacturer in the world.
GGB, formerly Glacier Garlock Bearings, then GGB Bearing Technology manufactures self-lubricating, prelubricated plain bearings and tribological polymer coating for various industries and applications. It has production facilities in the U.S., Germany, France, Slovakia, Brazil and China. The company is a subsidiary of EnPro Industries. The company manufactures metal-polymer bearings, engineered plastics bearings, fiber reinforced composite bushings, metal and bimetal bearings, bushing blocks & thrust plates and bearing assemblies.
EnPro Industries, Inc. is an American industrial conglomerate, through its various divisions and subsidiaries it provides engineered industrial products for critical applications in a wide range of industries. Its businesses manufacture sealing and other high-performance products, plain bearings and diesel engines. Businesses operated by EnPro Industries include Compressor Products International, Fairbanks Morse, Garlock Sealing Technologies, GGB Bearing Technology, Technetics Group and STEMCO.
A Wills Ring or Cooper Ring is a form of all-metallic O-ring seal. They are used for extremely arduous service, such as sealing the head gasket of high performance piston engines.
For 100 years, Manoir Industries, as an international group in metal processing, has developed alloys and operated processes dedicated to the manufacturing of high-performance cast, forging and boilermaking components for the petrochemical, nuclear, oil & gas, construction & mining equipment, windmill & hydraulic, defence, steel and aerospace industries.
Stemco is a Longview, Texas, based company that manufactures and distributes products for the global commercial vehicle market. Its major product categories include wheel end products, brake products, intelligent transportation systems and suspension components.
In re Garlock Sealing Technologies, LLC is a court case heard in the United States District Court for the Western District of North Carolina which involves the entry into bankruptcy proceedings by Garlock Sealing Technologies, a manufacturer of coated asbestos gaskets, as a result of potential liability from current and future settlements. The plaintiffs were over 4,000 asbestos victims suffering from mesothelioma, including many Navy veterans, as well as an unknown number of future mesothelioma victims. As noted by the court, mesothelioma "is always fatal, causing death essentially by suffocation within about eighteen months of diagnosis" and involves "a horrific death."
Esterline Technologies Corporation was a publicly traded company that designs, manufactures, and markets specialty products primarily for aerospace and defense customers. The company is best known as a supplier of products and equipment for aerospace companies such as Boeing and Airbus; and for American and allied military forces.
