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 5930-01-412-1416
NSN 5930-01-119-4108
NSN 5930-00-311-6963
NSN 2925-01-129-1261
NSN 5905-01-450-4315
NSN 5990-00-097-7642
NSN 6105-00-674-5690
NSN 5998-00-959-6018
NSN 5925-00-921-1171
NSN 6620-01-227-4380
NSN 6610-01-253-9180
NSN 6150-00-111-0881