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 6135-01-010-0891
NSN 5975-01-190-3948
NSN 6150-00-830-4118
NSN 5998-01-204-8302
NSN 5990-01-658-9964
NSN 6220-00-401-9905
NSN 5855-01-505-2210
NSN 5930-00-092-9600
NSN 5996-00-218-1123
NSN 6110-00-955-0900
NSN 5965-00-843-9957
NSN 5895-01-142-6992