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 6145-01-076-5071
NSN 6145-01-221-0543
NSN 5950-01-432-2038
NSN 5855-01-461-2741
NSN 5965-01-544-1135
NSN 5905-00-105-0701
NSN 5945-00-018-4543
NSN 6130-01-641-6700
NSN 5975-01-476-6362
NSN 5998-01-287-0090
NSN 6610-01-362-8686
NSN 4140-01-018-9137