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 5920-01-119-3652
NSN 5920-01-398-7123
NSN 5975-01-471-6890
NSN 6145-01-272-6825
NSN 6650-01-312-0778
NSN 6645-00-442-7128
NSN 2925-00-455-2367
NSN 6135-01-022-5427
NSN 5905-00-458-6577
NSN 5915-01-100-2097
NSN 6105-01-346-6798
NSN 5925-01-106-6726