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 6110-01-186-6238
NSN 5905-00-787-9586
NSN 5975-01-388-2539
NSN 5975-01-608-3913
NSN 6610-00-390-8471
NSN 2925-01-091-4734
NSN 5990-01-193-0487
NSN 5998-00-322-6587
NSN 5925-00-782-6946
NSN 6685-01-537-0829
NSN 6105-01-383-0988
NSN 6645-01-065-9502