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 5965-01-353-4170
NSN 6240-01-435-7973
NSN 6645-01-219-5911
NSN 6240-01-167-1060
NSN 6110-01-553-8608
NSN 2925-01-079-6229
NSN 5910-01-435-1178
NSN 6610-00-186-9180
NSN 5855-01-184-8089
NSN 6135-01-437-6409
NSN 6685-01-465-1250
NSN 6135-00-948-7061