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 5895-01-605-3539
NSN 5960-00-017-2892
NSN 5920-00-908-1929
NSN 6650-01-108-6629
NSN 5910-00-186-7342
NSN 5915-00-542-2179
NSN 6645-01-538-5041
NSN 5855-00-079-2370
NSN 6610-01-371-3006
NSN 6645-00-754-4108
NSN 5925-00-456-0651
NSN 5960-01-019-4920