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 5925-01-406-5626
NSN 5910-00-613-3140
NSN 5998-00-967-0166
NSN 5895-01-437-8189
NSN 6135-01-424-8130
NSN 5915-01-127-6677
NSN 5895-00-288-5878
NSN 5910-01-053-5099
NSN 5965-01-138-1865
NSN 6685-01-450-3304
NSN 5910-01-513-6221
NSN 6685-01-310-2212