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 5960-01-023-8037
NSN 5910-01-505-6083
NSN 5985-00-959-3318
NSN 6220-01-634-0660
NSN 6145-00-815-2763
NSN 2925-01-219-9471
NSN 6150-01-359-0300
NSN 5835-01-203-8295
NSN 5975-01-339-7789
NSN 6645-01-150-2039
NSN 6610-01-131-5714
NSN 6220-01-589-6344