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 5905-01-409-2951
NSN 6220-00-028-3964
NSN 5915-00-719-6455
NSN 5855-00-256-5562
NSN 5930-01-025-0054
NSN 6150-01-544-8853
NSN 6145-00-578-7522
NSN 5975-01-116-2115
NSN 5920-01-204-2857
NSN 6685-01-381-6077
NSN 5950-01-448-9779
NSN 6135-01-566-1034