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 2925-01-322-9780
NSN 6620-01-074-2882
NSN 5905-00-288-7885
NSN 5975-01-204-2867
NSN 6610-01-649-5326
NSN 5910-01-090-6359
NSN 5910-00-017-8816
NSN 6130-01-633-3044
NSN 7035-01-425-8063
NSN 6645-01-027-7042
NSN 5945-01-606-1355
NSN 5925-01-395-1496