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 5965-01-577-0565
NSN 5935-01-380-3476
NSN 6610-01-035-1252
NSN 5935-01-410-7790
NSN 5999-01-279-7221
NSN 5998-01-359-5675
NSN 5960-01-481-8051
NSN 2925-01-244-3016
NSN 5925-00-456-0651
NSN 6145-00-897-8990
NSN 7035-01-535-7320
NSN 7035-01-580-4346