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 5990-01-368-8208
NSN 6110-01-394-5302
NSN 5990-00-258-0228
NSN 5910-01-364-9163
NSN 6645-01-381-7104
NSN 5855-00-631-4565
NSN 5930-00-988-6811
NSN 6620-01-383-7519
NSN 5905-01-356-8566
NSN 6610-00-411-7246
NSN 5930-00-014-2735
NSN 5935-01-406-1312