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 2925-01-157-9204
NSN 6645-00-434-8793
NSN 5999-01-105-0610
NSN 2925-01-139-5144
NSN 5975-01-571-2222
NSN 5895-01-617-7486
NSN 6620-01-449-8743
NSN 5950-01-398-9557
NSN 5950-01-359-1809
NSN 5990-00-424-8872
NSN 6135-00-062-5080
NSN 5920-01-472-6923