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 6105-00-964-4060
NSN 5985-00-536-5334
NSN 6145-01-576-9609
NSN 6130-01-195-6510
NSN 6145-00-761-2878
NSN 6685-01-378-7090
NSN 5965-01-267-8536
NSN 6650-01-003-9355
NSN 6110-01-091-5348
NSN 6610-01-627-8476
NSN 2925-01-288-2091
NSN 5910-01-012-0752