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 5935-01-167-8866
NSN 5930-01-649-3055
NSN 5960-01-197-4461
NSN 6130-01-142-1308
NSN 6320-01-498-4954
NSN 5920-00-614-9281
NSN 5895-01-410-7717
NSN 6150-00-511-8563
NSN 6650-01-660-9645
NSN 6645-01-241-9483
NSN 5975-01-133-3440
NSN 5910-01-341-9076