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 5905-00-827-0168
NSN 5960-01-080-7656
NSN 5905-00-529-0508
NSN 5915-01-111-9971
NSN 5975-01-261-1292
NSN 6105-00-152-7958
NSN 5920-01-401-5300
NSN 4140-01-553-6883
NSN 6685-00-972-9526
NSN 7035-01-042-5308
NSN 5915-01-619-2947
NSN 6150-01-495-2021