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 4140-00-905-8331
NSN 6610-00-734-5976
NSN 5855-00-991-0096
NSN 6645-01-492-5304
NSN 6645-01-077-9350
NSN 5905-00-731-5252
NSN 6620-00-175-0663
NSN 5905-01-422-6880
NSN 6110-01-537-1159
NSN 6135-01-542-0659
NSN 5935-01-360-0247
NSN 5925-00-138-5108