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 5895-01-245-9240
NSN 6110-01-308-3951
NSN 5950-01-441-2143
NSN 6610-01-035-1252
NSN 6150-00-987-0877
NSN 6110-01-325-5670
NSN 6145-00-104-6047
NSN 5895-00-995-9430
NSN 5999-00-570-5530
NSN 6145-00-061-6866
NSN 5990-01-296-8190
NSN 6130-01-337-5633