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 2925-01-510-9378
NSN 5965-00-171-1265
NSN 5895-00-991-8999
NSN 6620-01-087-4361
NSN 6685-01-435-4366
NSN 6645-01-168-3743
NSN 6220-01-145-1183
NSN 5998-01-607-2308
NSN 5935-01-401-5324
NSN 6150-01-546-0266
NSN 5990-00-232-3965
NSN 2925-00-441-8252