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 6135-01-525-6979
NSN 5960-01-430-3911
NSN 6645-01-473-9179
NSN 5999-01-612-1014
NSN 5960-01-443-3067
NSN 6645-01-495-0939
NSN 6105-00-733-9226
NSN 6685-00-889-9486
NSN 5960-01-495-0859
NSN 5920-01-372-9642
NSN 6135-01-515-4260
NSN 6320-01-347-2638