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 6110-01-055-6442
NSN 6130-01-170-5085
NSN 5996-00-100-1238
NSN 5930-01-253-1856
NSN 5999-01-060-5104
NSN 5930-00-904-2143
NSN 6110-01-058-2476
NSN 6220-01-398-0614
NSN 6220-01-211-7025
NSN 6150-01-382-5837
NSN 5990-01-354-1366
NSN 6110-00-182-8664