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 5998-01-344-0103
NSN 2925-01-255-6394
NSN 6240-01-200-7937
NSN 6145-01-184-2795
NSN 5960-01-319-3932
NSN 6685-00-663-9000
NSN 6685-01-604-9186
NSN 7035-01-536-7129
NSN 6320-01-512-2031
NSN 6150-01-464-2420
NSN 2925-01-133-8128
NSN 5910-00-103-7451