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 5990-01-392-2210
NSN 5925-01-399-0613
NSN 6150-00-686-5110
NSN 5998-00-926-3730
NSN 6320-01-106-4414
NSN 5960-00-138-9871
NSN 5930-01-026-0246
NSN 2925-00-875-5116
NSN 5999-01-524-8766
NSN 5998-01-531-7840
NSN 5965-01-179-7749
NSN 5999-00-127-3495