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 6135-00-416-2898
NSN 5975-01-138-7413
NSN 2925-01-376-9236
NSN 5945-01-536-4251
NSN 5998-01-170-4352
NSN 5910-01-461-9038
NSN 6240-00-318-8800
NSN 5945-01-415-5087
NSN 5930-01-188-8518
NSN 5935-01-415-0887
NSN 5998-01-383-4631
NSN 5990-01-276-6190