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 6650-00-436-3531
NSN 6685-01-328-9166
NSN 5960-01-567-1096
NSN 5975-00-556-9743
NSN 5960-01-539-1956
NSN 6610-00-051-0989
NSN 5930-01-630-0962
NSN 6130-01-382-0254
NSN 5950-00-466-2041
NSN 5975-00-084-5264
NSN 5905-01-466-5993
NSN 2925-00-639-6677