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 6135-00-683-0536
NSN 7035-00-946-2642
NSN 4140-01-472-2768
NSN 5999-01-096-4352
NSN 5925-00-945-5463
NSN 6650-01-071-1234
NSN 6645-01-322-8897
NSN 6220-01-140-4110
NSN 6610-01-043-8597
NSN 5965-01-231-9125
NSN 6150-01-065-3040
NSN 6135-01-046-6803