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 6110-00-252-0680
NSN 6685-01-487-0742
NSN 6105-00-273-1106
NSN 6110-01-225-4137
NSN 6650-00-134-5130
NSN 5895-00-518-1593
NSN 5965-01-652-3339
NSN 5996-00-924-4493
NSN 2925-01-386-7392
NSN 5925-00-267-3044
NSN 5975-01-529-7887
NSN 5855-00-797-8217