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 6620-01-535-6925
NSN 6685-00-145-4928
NSN 5930-00-943-2705
NSN 6685-01-022-8479
NSN 5910-01-565-3508
NSN 5855-01-528-8776
NSN 5998-01-027-2690
NSN 6135-01-282-4326
NSN 5895-01-369-3258
NSN 6135-01-066-6904
NSN 7035-00-104-7613
NSN 5990-00-288-1820