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 5990-01-655-1437
NSN 6220-00-225-8345
NSN 5915-00-281-5414
NSN 5965-00-404-6809
NSN 6645-01-116-7713
NSN 5935-01-293-1317
NSN 6135-01-174-9195
NSN 6110-01-389-9996
NSN 5895-01-493-2534
NSN 2925-01-408-9485
NSN 6620-00-030-2894
NSN 5935-00-715-1147