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 6610-01-168-9713
NSN 5895-01-562-3494
NSN 5895-01-121-4435
NSN 5996-01-585-3295
NSN 5915-01-372-8918
NSN 6610-01-459-7535
NSN 5910-01-289-9461
NSN 6620-01-426-2220
NSN 6650-01-367-4989
NSN 5915-00-011-1612
NSN 5999-00-954-5138
NSN 2925-01-231-6312