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 5905-00-850-8915
NSN 6150-01-026-0913
NSN 5905-01-420-9764
NSN 6145-01-199-1430
NSN 6685-01-114-9501
NSN 6150-01-376-0969
NSN 5950-01-595-5647
NSN 5998-00-117-4133
NSN 5905-01-580-0951
NSN 6145-01-230-4937
NSN 5930-01-406-2398
NSN 5855-01-414-6265