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 2925-00-833-9466
NSN 6110-01-492-6202
NSN 5990-00-481-7208
NSN 4140-00-239-7409
NSN 5990-01-633-9503
NSN 6220-01-156-1168
NSN 6145-00-891-6779
NSN 5998-00-364-3665
NSN 5905-01-130-8328
NSN 6610-01-464-0897
NSN 6650-01-467-2355
NSN 6135-00-990-1822