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 5925-01-101-3386
NSN 6240-01-344-7134
NSN 6145-01-471-0826
NSN 6685-01-434-4374
NSN 5925-00-491-4573
NSN 5920-01-649-7794
NSN 4140-00-701-0406
NSN 5975-00-886-6332
NSN 5950-01-519-7180
NSN 5985-01-493-7139
NSN 5920-00-940-2912
NSN 4140-01-174-9335