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 6105-01-435-2575
NSN 6645-01-438-6986
NSN 6220-01-422-1429
NSN 5998-00-588-0000
NSN 6650-00-333-3046
NSN 5985-00-003-8794
NSN 6135-01-462-1135
NSN 5990-00-857-8326
NSN 6610-01-078-9238
NSN 5975-00-035-6524
NSN 6130-01-056-5251
NSN 5855-01-286-9928