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 6620-01-574-1862
NSN 5930-01-230-0262
NSN 5855-00-361-0167
NSN 5905-00-721-4378
NSN 6220-01-575-7741
NSN 6645-00-123-9134
NSN 6220-01-658-0474
NSN 5915-01-551-7405
NSN 6135-01-543-2879
NSN 5999-01-155-9202
NSN 5985-01-625-0753
NSN 4140-01-085-2607