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 6150-00-643-7503
NSN 5999-00-141-9441
NSN 5990-01-407-1474
NSN 5999-01-265-0684
NSN 6220-01-448-5207
NSN 5920-01-313-2293
NSN 5925-01-568-5248
NSN 5990-00-251-0965
NSN 5999-00-764-1721
NSN 5920-01-502-9264
NSN 6610-01-444-1490
NSN 7035-01-296-4737