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 6685-01-602-7881
NSN 5930-01-055-5525
NSN 5990-01-453-3552
NSN 5835-00-890-3932
NSN 6685-01-175-3431
NSN 5996-01-026-9981
NSN 6130-01-048-4903
NSN 6240-01-549-7138
NSN 5975-01-394-4152
NSN 6135-00-274-4035
NSN 6685-00-911-3021
NSN 4140-01-050-8096