A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.
Classification: Gaskets,washers & other seals
NSN 6110-01-415-7143
NSN 5960-00-296-4174
NSN 5975-01-523-8922
NSN 5975-00-553-7151
NSN 5895-01-100-4638
NSN 5965-01-354-9834
NSN 5960-01-067-9531
NSN 5910-00-198-5306
NSN 5985-00-930-2761
NSN 6240-00-755-6904
NSN 5855-00-962-5792
NSN 6145-01-151-4102