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 5915-01-026-2420
NSN 5965-00-230-8818
NSN 6650-01-177-4398
NSN 5910-01-500-1073
NSN 5960-00-858-5259
NSN 7035-01-383-6549
NSN 5925-00-432-6618
NSN 6130-00-175-8063
NSN 6135-01-154-3526
NSN 5855-00-477-9943
NSN 5996-01-355-2834
NSN 6610-01-052-0652