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 5965-01-445-3564
NSN 5950-01-068-6195
NSN 6645-01-441-2762
NSN 5925-00-578-0479
NSN 5905-01-144-0870
NSN 5925-01-213-6398
NSN 6135-00-209-6918
NSN 6685-01-388-2574
NSN 5975-01-568-8534
NSN 6150-01-537-9560
NSN 5895-01-068-7269
NSN 6610-01-433-1457