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 6685-01-574-8645
NSN 5999-01-406-2787
NSN 6620-00-955-6122
NSN 5895-00-532-6856
NSN 2925-01-266-5229
NSN 6685-01-423-1464
NSN 5855-00-912-3885
NSN 5895-01-330-5741
NSN 6110-01-025-6139
NSN 6685-01-608-6908
NSN 6650-00-566-7953
NSN 2925-01-454-2046