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 6135-01-361-9297
NSN 6110-01-280-3871
NSN 6650-01-158-6888
NSN 6110-01-416-0683
NSN 5930-01-378-7320
NSN 5895-00-231-1461
NSN 6645-01-462-3754
NSN 6320-00-070-4544
NSN 5975-00-477-6607
NSN 6620-01-566-1142
NSN 5920-00-581-7958
NSN 5975-01-596-3040