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 5985-00-643-3875
NSN 6135-00-016-0071
NSN 6240-01-157-9128
NSN 6135-00-168-3876
NSN 5960-00-131-1218
NSN 6240-00-107-8192
NSN 5855-00-135-9064
NSN 5895-00-333-5247
NSN 5930-01-208-1248
NSN 5999-01-624-7928
NSN 5990-00-797-7649
NSN 5935-01-214-7612