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 6645-00-503-1379
NSN 5895-01-411-9176
NSN 6130-01-312-2065
NSN 5998-01-211-6035
NSN 5990-01-341-5735
NSN 5925-00-929-7829
NSN 5835-01-618-7621
NSN 5999-00-015-3091
NSN 5990-01-531-0487
NSN 5895-01-298-7460
NSN 2925-01-248-6028
NSN 5905-01-522-1207