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 6685-01-521-4715
NSN 6110-00-243-7558
NSN 5996-01-039-1894
NSN 5925-01-143-8385
NSN 6320-00-098-2858
NSN 5915-01-648-5885
NSN 5910-01-421-1335
NSN 6620-00-849-0450
NSN 6220-01-204-8916
NSN 6645-01-239-8133
NSN 5985-00-109-2800
NSN 5999-01-566-0804