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 7035-01-187-6002
NSN 2925-00-355-5130
NSN 5975-00-980-3042
NSN 6320-00-445-1187
NSN 5935-01-394-5187
NSN 4140-01-603-5149
NSN 6620-00-914-2742
NSN 5835-00-351-9459
NSN 7035-01-614-3757
NSN 6650-01-242-8087
NSN 5996-00-254-0426
NSN 5855-00-014-5008