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 6620-00-464-6105
NSN 4140-00-764-3839
NSN 6650-01-533-6290
NSN 5915-01-378-7747
NSN 6110-00-216-6911
NSN 6645-01-453-6184
NSN 5990-00-119-5699
NSN 5910-01-439-1191
NSN 6610-00-155-1334
NSN 5965-01-087-8572
NSN 5945-01-485-1464
NSN 6150-00-843-9260