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 5999-01-232-7615
NSN 5950-01-191-6407
NSN 5965-01-538-0698
NSN 6620-00-785-6019
NSN 4140-00-198-4961
NSN 5996-01-426-8531
NSN 7035-01-449-1846
NSN 6150-01-478-8105
NSN 5950-01-414-0435
NSN 5998-00-163-4588
NSN 5895-01-197-5747
NSN 6145-00-186-6291