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 5999-01-553-4107
NSN 5935-01-487-3783
NSN 6220-00-292-6775
NSN 4140-01-202-7853
NSN 5975-01-261-4965
NSN 6240-01-374-4660
NSN 6240-01-170-3491
NSN 5895-01-113-9297
NSN 6220-01-452-7005
NSN 6145-00-205-4046
NSN 6135-01-168-2944
NSN 5855-01-537-1162