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 5910-01-322-0918
NSN 6240-00-868-2102
NSN 7035-01-543-6284
NSN 6130-00-170-4062
NSN 5855-00-055-1579
NSN 6105-01-362-4822
NSN 6220-01-264-0118
NSN 6610-01-608-2899
NSN 5975-01-050-1253
NSN 5999-01-146-7733
NSN 2925-00-066-9700
NSN 5905-00-584-5009