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 5945-00-515-2667
NSN 6620-00-451-6189
NSN 5998-00-793-1495
NSN 6130-01-599-7770
NSN 7035-00-193-2269
NSN 5895-00-175-6415
NSN 5950-00-277-4701
NSN 5945-01-007-8132
NSN 5855-00-885-8452
NSN 5990-01-170-0077
NSN 5960-00-984-7130
NSN 5925-00-835-6009