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 5905-00-111-0499
NSN 5996-00-799-6519
NSN 6135-00-351-8606
NSN 6110-00-905-6148
NSN 5975-00-067-3368
NSN 4140-01-224-5417
NSN 6240-00-889-5257
NSN 6110-01-472-1963
NSN 5910-00-050-6280
NSN 7035-00-497-8784
NSN 5935-01-090-1049
NSN 5910-01-289-3912