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 5999-00-899-1338
NSN 2925-00-983-7521
NSN 6685-01-524-7174
NSN 6650-01-392-8086
NSN 5998-00-149-1837
NSN 4140-01-353-9043
NSN 6645-00-664-4665
NSN 5996-01-091-8876
NSN 6105-00-639-6857
NSN 5895-01-633-2118
NSN 6645-00-067-9517
NSN 7035-01-010-8309