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 2925-01-285-7163
NSN 6105-01-210-5707
NSN 5930-01-574-3730
NSN 5910-01-048-1150
NSN 5950-01-234-7220
NSN 5905-01-065-0382
NSN 6620-01-038-5801
NSN 6105-01-415-0828
NSN 5920-00-180-4278
NSN 6240-01-236-0781
NSN 6645-00-570-8472
NSN 5960-01-299-9182