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 5975-01-439-8698
NSN 5945-01-556-7258
NSN 5999-01-157-6199
NSN 5990-01-255-7387
NSN 5835-00-606-7042
NSN 5975-01-307-9274
NSN 4140-00-136-9214
NSN 6610-01-439-2651
NSN 5855-00-117-0857
NSN 6650-00-926-4483
NSN 6220-01-019-4090
NSN 5945-01-578-4625