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 5920-00-763-4839
NSN 5915-01-626-5026
NSN 6145-01-449-0342
NSN 6620-01-609-9513
NSN 5996-00-323-1294
NSN 6240-00-887-8103
NSN 5835-00-064-5312
NSN 6135-00-900-2139
NSN 6150-01-030-4082
NSN 6220-01-170-9355
NSN 5990-00-174-6695
NSN 5950-01-014-6238