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 5925-01-493-7763
NSN 6105-00-085-2178
NSN 5835-00-264-0946
NSN 6150-01-136-3770
NSN 6650-01-543-3349
NSN 5985-01-115-9469
NSN 6150-01-391-7366
NSN 6240-01-548-2197
NSN 6130-00-916-5290
NSN 5895-00-810-9050
NSN 6135-01-128-5358
NSN 4140-00-733-7936