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 5965-00-119-3550
NSN 5975-01-419-3070
NSN 6240-01-487-3840
NSN 5975-01-068-4125
NSN 5925-00-105-8462
NSN 5996-00-621-3898
NSN 5990-01-571-7468
NSN 5965-01-215-0993
NSN 7035-00-369-6346
NSN 6650-01-537-2624
NSN 5925-00-539-2016
NSN 5910-01-604-1946