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 5965-01-472-1997
NSN 4140-00-660-8699
NSN 5975-00-482-3954
NSN 6150-00-537-0482
NSN 5895-01-146-0477
NSN 5945-01-271-5495
NSN 6620-00-923-8470
NSN 5925-01-625-8942
NSN 5935-01-593-1791
NSN 5945-00-027-8567
NSN 5920-01-102-7354
NSN 5910-00-466-8053