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 5950-01-422-1361
NSN 5910-01-245-5311
NSN 6610-00-397-7678
NSN 6145-01-365-1854
NSN 5975-01-170-5927
NSN 5925-01-145-6444
NSN 5925-01-603-3372
NSN 6150-01-384-1442
NSN 5835-01-463-2334
NSN 7035-01-282-7124
NSN 5935-01-380-1273
NSN 6240-01-130-7393