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 6145-01-043-1530
NSN 5975-01-066-6494
NSN 5835-01-587-8787
NSN 5985-01-527-7793
NSN 5965-00-876-2378
NSN 5855-00-688-9954
NSN 4140-01-057-4152
NSN 5910-00-119-4498
NSN 6620-00-452-5738
NSN 5935-01-461-5817
NSN 7035-01-027-1718
NSN 5920-00-158-5391