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 6240-01-586-0275
NSN 5985-01-006-5791
NSN 5905-01-009-4442
NSN 5915-01-441-2982
NSN 5935-00-753-7565
NSN 6135-00-826-4798
NSN 5910-01-373-2608
NSN 7035-00-392-5417
NSN 5920-01-634-0250
NSN 5935-00-889-2540
NSN 5935-01-345-2730
NSN 2925-01-658-4470