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 5905-01-567-9869
NSN 5996-01-050-1162
NSN 6220-01-262-7171
NSN 5895-01-204-2726
NSN 5990-01-619-8514
NSN 5930-01-288-3021
NSN 6135-00-812-9039
NSN 5920-01-528-9628
NSN 5950-01-352-5230
NSN 5999-00-203-1202
NSN 2925-01-399-2765
NSN 5960-01-445-3622