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 5975-01-234-4614
NSN 6135-01-205-5965
NSN 5990-01-501-5409
NSN 6135-01-626-6325
NSN 5905-00-132-6332
NSN 5945-01-189-9664
NSN 6320-00-222-1468
NSN 5996-00-185-1372
NSN 6610-00-247-1308
NSN 5950-00-811-2674
NSN 6320-01-441-2438
NSN 6150-00-454-3391