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 5975-01-110-8351
NSN 5975-00-353-5589
NSN 5998-01-225-6526
NSN 7035-01-602-9350
NSN 2925-01-185-9144
NSN 6135-00-927-5848
NSN 5930-00-362-6737
NSN 7035-01-603-7150
NSN 6620-01-185-5541
NSN 5915-01-384-2642
NSN 6320-00-521-9350
NSN 6105-00-613-7145