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 7035-01-336-0464
NSN 5920-01-507-6405
NSN 5905-00-905-4725
NSN 5925-01-622-1147
NSN 5905-00-631-8746
NSN 5895-00-871-5700
NSN 5945-01-549-9815
NSN 6135-00-221-4720
NSN 5950-01-357-7451
NSN 5990-00-113-6137
NSN 6130-01-263-0696
NSN 2925-01-090-2391