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 5855-01-534-2428
NSN 6145-01-074-7541
NSN 7035-00-620-6835
NSN 6240-01-647-6751
NSN 5925-00-284-3726
NSN 5930-01-506-9530
NSN 5996-00-399-0731
NSN 5930-01-415-4579
NSN 7035-01-465-5250
NSN 6240-01-190-5344
NSN 5990-00-772-9277
NSN 5996-00-082-0320