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 5935-00-443-7318
NSN 2925-01-115-8072
NSN 5895-01-241-3022
NSN 5950-00-767-8537
NSN 6135-01-584-0941
NSN 5895-00-111-8334
NSN 5835-01-629-2044
NSN 5930-01-312-2217
NSN 5975-00-707-6245
NSN 6135-01-512-8105
NSN 6130-00-962-0410
NSN 6645-00-418-2133