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 6610-00-886-3652
NSN 5975-00-031-2871
NSN 5935-01-466-6295
NSN 5945-00-827-5722
NSN 6220-00-966-5074
NSN 5905-01-575-5790
NSN 6645-00-079-1430
NSN 4140-01-074-6262
NSN 5905-01-505-0699
NSN 5990-01-485-0260
NSN 5945-01-618-7001
NSN 6610-01-250-2811