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 5950-01-545-5762
NSN 5990-00-193-3028
NSN 5945-00-532-4367
NSN 5835-01-510-1873
NSN 7035-01-628-7721
NSN 2925-01-331-5039
NSN 6130-01-010-3254
NSN 6685-00-485-5781
NSN 6320-01-643-0850
NSN 5999-00-637-9685
NSN 5965-00-669-9146
NSN 6105-01-198-5420