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 6150-00-400-2952
NSN 6645-01-135-5449
NSN 5855-01-391-3819
NSN 5965-01-614-1191
NSN 6105-00-189-1849
NSN 4140-00-072-0865
NSN 6105-01-474-6386
NSN 6645-01-249-3258
NSN 6645-01-514-3353
NSN 5960-00-064-6530
NSN 6135-00-027-3914
NSN 6610-01-659-3277