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 5895-01-468-8695
NSN 5975-01-455-4853
NSN 5915-00-851-1208
NSN 5960-01-089-1368
NSN 5960-00-151-7576
NSN 5925-00-451-2061
NSN 6135-01-413-4747
NSN 6130-01-400-1385
NSN 5945-00-506-2315
NSN 6220-00-157-5009
NSN 5905-01-594-2232
NSN 5965-01-420-6613