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 6240-00-480-7896
NSN 6620-00-028-3370
NSN 6685-01-346-0890
NSN 5975-01-604-3292
NSN 5930-00-410-8877
NSN 5895-01-154-5831
NSN 5925-01-456-4828
NSN 6135-01-660-8237
NSN 6645-00-155-2398
NSN 5950-00-881-3709
NSN 4140-00-580-2742
NSN 6110-00-437-7877