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 6650-01-539-9641
NSN 6220-01-080-6362
NSN 6645-01-473-0461
NSN 5990-00-725-7813
NSN 5920-00-425-2878
NSN 5895-00-146-1809
NSN 6130-01-139-4491
NSN 6650-01-168-8451
NSN 7035-00-055-9778
NSN 5985-01-165-0411
NSN 4140-00-167-4712
NSN 5945-00-079-4226