Glossary for Seals, Gaskets, O-Rings, Orings, Rubber.
This is perhaps the most comprehensive glossary of seal, gasket, packing and molded rubber parts terms available on the internet.
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Nebar - A special type of gasket material used in electrical transformers.
Neoprene - Synthetic rubber made by polymerizing 2-chlor-1, 3-butadiene. Neoprene compounds are rioted for their resistance to oil, sunlight and ozone. There are various types, most of which are vulcanizable without the use or sulfur.
Nerve - The elastic resistance of unvulcanized rubber or rubber compounds to permanent defor- mation during processing.
Nilos Rings - A special seal ring.
Nitrile Rubber - A generic term comprising the various copolymers of butadiene and acrylonitrile. the copolymers vary essentially in butadiene-acrylonitrile ratios, Mooey values and staining properties. They are resistant to solvents, oils, and greases and to bent and abrasion. Some trade names are Chemigum, Krynac, Nipol, Hycar, and Paracril. The Germans first produced the nitrile rubbers and called them Buna N and Perbunan.
Non-Blooming - The absence of a bloom.
Novathan - A name for a type of polyurethane sealing material.