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 5925-00-767-0284
NSN 6145-01-401-3713
NSN 5960-00-968-4529
NSN 6110-01-523-0229
NSN 6685-01-400-4192
NSN 2925-01-444-2061
NSN 6620-01-553-7296
NSN 6645-01-500-0827
NSN 5960-01-106-5046
NSN 6685-00-480-9200
NSN 6130-01-491-6084
NSN 6610-01-278-9704