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 5930-01-515-0285
NSN 5935-01-574-9664
NSN 5990-01-429-6211
NSN 6145-01-417-2988
NSN 6150-01-436-7053
NSN 5975-01-205-6997
NSN 5895-01-093-0106
NSN 5985-01-256-8484
NSN 5855-01-051-4143
NSN 4140-00-779-4876
NSN 7035-00-517-8232
NSN 6135-00-452-2266