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 6620-01-100-2530
NSN 6220-01-550-1399
NSN 6110-01-410-7637
NSN 6620-01-519-2628
NSN 2925-01-567-8027
NSN 6645-01-381-0656
NSN 6240-01-042-3650
NSN 5905-01-622-3069
NSN 6685-01-389-2068
NSN 5920-00-617-9909
NSN 6620-00-758-5233
NSN 6105-01-353-0772