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 5905-01-491-0231
NSN 7035-01-434-0606
NSN 6135-00-334-4500
NSN 5855-01-530-3172
NSN 6620-00-535-1412
NSN 5975-01-361-9830
NSN 6320-01-046-5228
NSN 6620-01-090-3803
NSN 6135-01-068-0119
NSN 5960-00-057-9184
NSN 6145-01-413-5516
NSN 5855-00-004-0904