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 5975-01-273-0209
NSN 6650-00-011-0776
NSN 6620-00-262-3113
NSN 6240-01-211-4507
NSN 5950-00-012-3219
NSN 5996-01-462-1631
NSN 5835-00-814-1359
NSN 6220-00-940-0625
NSN 6620-01-535-6925
NSN 7035-01-496-5896
NSN 7035-00-865-9105
NSN 6610-00-941-0509