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 5950-00-549-4313
NSN 5999-01-021-3430
NSN 6650-00-172-7519
NSN 5990-01-040-6358
NSN 5930-01-260-6907
NSN 5910-01-217-9076
NSN 6240-01-200-7937
NSN 5925-01-604-9427
NSN 5950-01-030-9809
NSN 6620-01-064-0366
NSN 5855-01-613-6282
NSN 6685-00-596-8765