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 6685-01-133-3298
NSN 5855-01-520-8747
NSN 5925-00-227-0396
NSN 6145-00-958-6152
NSN 6645-00-831-6826
NSN 7035-01-107-2811
NSN 5910-00-409-1634
NSN 6220-01-342-5191
NSN 6650-01-076-5232
NSN 5965-00-362-2158
NSN 6135-01-344-2442
NSN 4140-01-142-8340