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 5998-01-170-5520
NSN 5910-01-355-2149
NSN 6220-01-338-6012
NSN 5996-00-185-9376
NSN 5910-01-476-5044
NSN 2925-00-383-3523
NSN 5920-01-471-5364
NSN 6685-01-487-4976
NSN 6620-01-363-0499
NSN 5990-00-372-5177
NSN 5855-01-630-1223
NSN 5945-00-792-9214