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 5920-01-550-5996
NSN 5895-00-155-4578
NSN 6610-00-254-9810
NSN 7035-00-946-2642
NSN 6135-00-683-0536
NSN 5945-00-578-4999
NSN 5990-00-985-1334
NSN 5990-00-067-6791
NSN 5920-00-925-2639
NSN 6685-01-283-4084
NSN 5855-01-621-9483
NSN 6135-00-182-7008