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 5925-01-393-7341
NSN 5996-00-646-8166
NSN 6145-00-834-6378
NSN 5996-01-464-9791
NSN 5930-01-280-2358
NSN 5990-01-365-6016
NSN 5999-01-061-6951
NSN 5950-00-069-1128
NSN 6150-00-163-1231
NSN 5930-00-686-5849
NSN 6685-01-624-8343
NSN 6645-01-400-1137