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 4140-01-235-1757
NSN 2925-00-169-3775
NSN 5945-00-269-5375
NSN 6130-00-569-2408
NSN 6145-01-029-4184
NSN 6610-00-191-5317
NSN 5945-01-072-2480
NSN 5965-01-368-9994
NSN 6685-00-900-8060
NSN 6645-01-077-4934
NSN 6240-01-051-6720
NSN 5990-01-439-4643