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 5999-00-402-6883
NSN 2925-00-707-6770
NSN 5895-01-356-7385
NSN 2925-01-198-7528
NSN 7035-01-319-2315
NSN 5925-01-052-7670
NSN 6620-00-286-5721
NSN 5950-01-259-2157
NSN 4140-00-432-5593
NSN 5990-00-847-6957
NSN 5985-01-551-1680
NSN 6620-01-313-8164