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 6240-01-266-7442
NSN 6105-00-617-5490
NSN 5960-01-286-3766
NSN 5975-01-345-6512
NSN 6145-00-902-9581
NSN 6135-01-265-1384
NSN 5996-01-463-3152
NSN 7035-01-495-1090
NSN 5965-01-633-4899
NSN 5920-00-990-9727
NSN 5950-01-596-3710
NSN 5895-01-534-3530