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 7035-00-365-3989
NSN 6105-00-265-7545
NSN 6145-01-366-1367
NSN 6610-01-269-3070
NSN 2925-01-463-8856
NSN 5998-01-120-3436
NSN 5990-01-411-8548
NSN 6685-01-088-7317
NSN 5835-01-381-9565
NSN 6685-00-926-4337
NSN 6650-01-484-7095
NSN 6610-01-265-1824