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 5920-00-087-0274
NSN 6650-00-544-5497
NSN 5925-01-252-8237
NSN 5855-01-421-7691
NSN 5996-01-392-9711
NSN 5855-00-337-3679
NSN 5915-00-952-5658
NSN 6610-01-560-5153
NSN 7035-00-585-2113
NSN 6645-01-116-3423
NSN 6130-01-176-6478
NSN 5996-01-564-6557