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 5895-01-113-4898
NSN 5905-01-213-6378
NSN 5930-00-411-4374
NSN 5960-01-031-0347
NSN 6130-00-700-1190
NSN 4140-00-329-8404
NSN 6130-01-622-6352
NSN 6320-00-809-5744
NSN 6150-01-267-8063
NSN 2925-01-572-0539
NSN 5990-00-623-8127
NSN 5998-00-840-6834