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 6685-01-585-2491
NSN 5905-01-012-1823
NSN 5996-01-444-0680
NSN 7035-00-541-8516
NSN 6110-01-173-3283
NSN 5905-01-586-7366
NSN 6610-01-228-8883
NSN 5990-00-269-2226
NSN 5950-00-221-5235
NSN 7035-00-252-7467
NSN 6645-00-754-4108
NSN 6145-01-168-7756