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Nitrile rubber, also known as nitrile butadiene rubber, NBR, Buna-N, and acrylonitrile butadiene rubber, is a synthetic rubber derived from acrylonitrile (ACN) and butadiene. [1] Trade names include Perbunan, Nipol, Krynac and Europrene. This rubber is unusual in being resistant to oil, fuel, and other chemicals.
Typical O-ring and application. 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, forming a seal at the interface.
The material was initially marketed with the brand name Buna S. Its name derives Bu for butadiene and Na for sodium (natrium in several languages including Latin, German, and Dutch), and S for styrene. [6] [7] [5] Buna S is an addition copolymer.
Polybutadiene rubber is seldom used alone, but is instead mixed with other rubbers. Polybutadiene is difficult to band in a two roll mixing mill. Instead, a thin sheet of polybutadiene may be prepared and kept separate. Then, after proper mastication of natural rubber, the polybutadiene rubber may be added to the two roll mixing mill.
Aluminium and aluminium alloys – Unalloyed aluminium ingots for remelting – Specifications: Withdrawn: DIN EN 576: EN 576: DIN 1712 Part 3: Aluminium; Half-Finished Products: Withdrawn: DIN EN 573-3: EN 573-3: DIN 1783: Strips, Plates and Sheets of Aluminium and Wrought: Withdrawn: DIN EN 485-4: EN 485-4: DIN 1786: Seamless Drawn Copper ...
Chemische Werke Buna in 1953, shortly before being transferred into a VEB Buna Werke in 1980 Logo 1954-1990 Under Soviet administration after World War II, Buna Werke Schkopau were expropriated and – under the name Chemische Werke Buna – became part of Sowjetische Aktiengesellschaft (SAG) Kautschuk in order to cover reparation demands of ...
An o-ring boss seal is a technique for joining two fluid-carrying pipes, hoses, or tubing. In an o-ring boss (abbreviated ORB) system, a male-threaded part is inserted into a female-threaded part, providing a mechanical seal. This system differs from others in that a nut is tightened over an o-ring in a chamfered area, creating a fluid-tight ...
Buna Werke may refer to: Buna Werke Schkopau , the first large-scale synthetic rubber plant in Schkopau, Germany Monowitz Buna Werke , a former synthetic rubber plant with attached forced labour camp near Oświęcim, Poland