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 6650-01-020-3645
NSN 6610-00-765-3283
NSN 6685-00-688-5154
NSN 6685-01-111-5288
NSN 5930-00-840-5510
NSN 5930-00-422-5255
NSN 6130-01-652-9978
NSN 5990-00-963-1799
NSN 6135-01-472-5681
NSN 5895-01-145-8507
NSN 6145-00-160-5318
NSN 5935-00-152-0890