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 5960-00-044-6807
NSN 6240-00-553-8891
NSN 5895-01-202-8748
NSN 6150-01-141-7340
NSN 6150-01-603-4490
NSN 6150-00-460-4782
NSN 5998-01-259-0345
NSN 5910-01-399-0255
NSN 5925-01-248-9250
NSN 6145-01-197-9233
NSN 6320-01-512-2031
NSN 6685-01-350-7691