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 6685-01-279-5492
NSN 6135-00-777-5562
NSN 5950-01-498-5212
NSN 6645-01-503-8211
NSN 5985-01-119-2741
NSN 5905-01-013-8937
NSN 5996-00-757-4308
NSN 5975-01-309-7610
NSN 5920-01-654-3960
NSN 5910-00-441-0670
NSN 5920-01-435-6052
NSN 5990-00-212-4316