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 5915-00-067-7464
NSN 5990-01-244-9998
NSN 5915-01-311-4723
NSN 5999-00-648-9107
NSN 6645-01-209-0264
NSN 6150-01-456-4448
NSN 5855-00-466-2309
NSN 5950-01-178-0902
NSN 2925-01-311-7840
NSN 5905-01-087-3740
NSN 6130-00-756-0209
NSN 6645-00-192-1152