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 6685-01-556-1320
NSN 6130-01-056-5251
NSN 6650-01-502-6761
NSN 5999-01-276-5560
NSN 5999-01-232-0566
NSN 5965-01-395-6368
NSN 7035-01-027-1718
NSN 5990-01-243-4233
NSN 5950-01-512-2430
NSN 7035-01-318-6578
NSN 6320-01-516-3836
NSN 5930-00-518-4790