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 6620-00-064-7992
NSN 5999-01-026-2557
NSN 5920-01-359-3982
NSN 5855-01-616-4391
NSN 5925-01-446-8106
NSN 5990-01-389-1196
NSN 5990-00-136-9609
NSN 5910-01-189-9659
NSN 6620-00-203-9466
NSN 6320-00-116-3658
NSN 5910-01-010-3356
NSN 5910-01-590-6237