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 5925-00-400-1561
NSN 5835-01-171-9126
NSN 7035-01-556-2554
NSN 5945-01-076-8147
NSN 7035-01-412-9465
NSN 6105-01-090-0661
NSN 2925-00-127-7828
NSN 5905-00-917-4151
NSN 5910-00-942-6591
NSN 5925-01-418-6345
NSN 5975-00-609-3141
NSN 5855-00-446-5921