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 5920-01-565-8255
NSN 5935-01-189-8058
NSN 6110-01-576-9415
NSN 5975-01-473-3485
NSN 5990-01-018-3953
NSN 6135-01-420-0341
NSN 5996-00-360-5126
NSN 5945-01-618-8605
NSN 7035-01-256-8203
NSN 6685-00-388-8821
NSN 6105-00-575-9720
NSN 6240-01-345-4479