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 5945-00-540-8178
NSN 5998-01-367-1302
NSN 5910-01-643-8406
NSN 5895-00-013-9312
NSN 6610-00-659-8760
NSN 5920-00-129-6652
NSN 6150-01-362-3802
NSN 6110-01-563-3173
NSN 2925-01-139-5144
NSN 5855-01-352-7033
NSN 6145-01-054-3874
NSN 5950-00-331-2747