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 6130-01-593-4029
NSN 5910-00-874-1048
NSN 6105-00-221-8573
NSN 7035-01-372-0421
NSN 6320-01-476-7702
NSN 6220-01-387-6332
NSN 6685-01-640-7240
NSN 5960-00-065-4847
NSN 7035-00-679-9027
NSN 5975-00-143-4658
NSN 6105-01-363-9225
NSN 6645-01-548-3934