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 5960-00-132-3104
NSN 6145-01-391-6199
NSN 7035-01-412-8322
NSN 5998-01-198-7737
NSN 5999-01-519-9353
NSN 5945-00-452-5769
NSN 5945-01-482-7506
NSN 6685-01-207-1412
NSN 5999-01-183-0796
NSN 5975-01-281-9859
NSN 5945-00-786-1447
NSN 6135-01-498-2233