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 2925-00-284-1534
NSN 7035-01-658-9769
NSN 5895-01-495-0244
NSN 6110-01-134-9982
NSN 5950-01-207-0751
NSN 6150-01-417-4732
NSN 6240-00-553-8891
NSN 5910-00-232-5028
NSN 6645-01-466-0185
NSN 5996-00-089-8383
NSN 5935-01-363-7296
NSN 6685-01-126-7204