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 6650-00-197-7563
NSN 6650-01-064-8941
NSN 5965-01-326-9860
NSN 5990-01-474-3477
NSN 5920-01-502-7940
NSN 5996-01-187-7424
NSN 6610-00-405-0513
NSN 6685-01-099-8539
NSN 6320-01-213-3974
NSN 5930-00-503-0816
NSN 6150-01-237-6688
NSN 5915-00-081-3929