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 6610-00-762-8290
NSN 6135-00-112-8637
NSN 5915-01-243-3583
NSN 5935-00-934-9718
NSN 7035-00-020-2227
NSN 5905-00-526-0753
NSN 5925-01-476-8913
NSN 5998-01-584-5093
NSN 5999-00-529-0157
NSN 5835-01-447-2544
NSN 6135-01-495-0933
NSN 5905-01-231-1294