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 5915-00-549-1098
NSN 6135-01-054-2462
NSN 5895-00-511-7194
NSN 4140-01-218-4999
NSN 5985-01-441-3590
NSN 5855-01-502-5141
NSN 6110-01-296-3590
NSN 2925-01-328-4394
NSN 5855-00-472-2055
NSN 5960-00-515-7366
NSN 5975-01-117-6187
NSN 5855-01-150-9970