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 5925-01-512-0779
NSN 5915-00-855-6016
NSN 5930-01-459-7373
NSN 6620-00-431-3837
NSN 6645-00-032-1125
NSN 5920-01-413-1608
NSN 6220-00-072-5134
NSN 5925-00-903-2166
NSN 6145-01-024-5572
NSN 2925-00-098-4131
NSN 7035-01-202-8172
NSN 5910-01-206-8648