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 6620-00-197-5130
NSN 5960-01-263-6781
NSN 5975-00-891-8516
NSN 5925-01-032-5003
NSN 6145-01-378-3110
NSN 5999-00-900-9114
NSN 6145-01-437-3003
NSN 5950-01-033-9695
NSN 6110-01-592-3572
NSN 5990-01-411-5930
NSN 5855-01-459-9254
NSN 5920-01-463-9082