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 5985-01-150-6028
NSN 6240-01-166-4517
NSN 6135-01-010-0891
NSN 5925-00-392-2971
NSN 5960-00-087-0713
NSN 5975-01-560-3904
NSN 5905-01-368-9569
NSN 5905-01-508-9341
NSN 5965-01-550-4425
NSN 6110-01-331-0890
NSN 5999-01-346-9625
NSN 5950-00-465-2320