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 4140-00-232-1039
NSN 6145-00-010-1425
NSN 6150-01-322-8112
NSN 5950-01-555-2997
NSN 5975-01-386-3061
NSN 5935-01-089-4986
NSN 7035-01-534-7930
NSN 6145-00-635-9957
NSN 6685-01-206-5218
NSN 6135-01-450-3781
NSN 5935-01-513-1247
NSN 5985-01-087-2409