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 6650-01-165-2175
NSN 5855-01-093-3080
NSN 5998-01-380-3408
NSN 5965-00-529-0602
NSN 5925-01-030-4673
NSN 5895-00-567-1140
NSN 6645-00-935-7046
NSN 5999-00-778-5133
NSN 5935-01-010-1587
NSN 5975-01-500-0690
NSN 6620-01-051-2045
NSN 6135-00-405-1989