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 6685-01-100-1071
NSN 5895-00-276-7916
NSN 5950-01-318-1155
NSN 5985-01-110-4789
NSN 5965-00-969-5795
NSN 5935-01-085-3308
NSN 6150-01-571-8029
NSN 6320-01-250-0290
NSN 6650-01-499-7471
NSN 5990-01-442-3520
NSN 5910-01-562-5788
NSN 5905-00-723-9350