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 5999-00-296-8870
NSN 6220-00-263-4893
NSN 5965-00-432-8528
NSN 6240-01-205-0005
NSN 5975-01-027-0253
NSN 6620-01-585-5647
NSN 5950-00-922-7254
NSN 6150-00-525-3007
NSN 6645-00-089-1942
NSN 6620-01-406-6840
NSN 6150-01-653-5872
NSN 6240-01-620-2450