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 6220-00-651-1957
NSN 5990-01-375-9273
NSN 2925-00-912-3993
NSN 5905-01-473-3088
NSN 6650-01-223-0852
NSN 6685-01-049-3726
NSN 6105-00-987-7935
NSN 5910-01-289-0188
NSN 5915-01-461-1461
NSN 6645-01-541-9114
NSN 5999-01-430-7175
NSN 5920-01-592-3050