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 6620-00-292-7000
NSN 5920-00-655-4251
NSN 5920-01-557-8492
NSN 5905-00-051-8950
NSN 6150-01-090-0982
NSN 5985-01-101-6193
NSN 6110-00-732-7459
NSN 4140-00-052-4815
NSN 5920-01-118-9492
NSN 5925-01-350-4295
NSN 6110-00-999-3130
NSN 5855-00-149-0766