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 6685-01-595-3495
NSN 6650-00-622-4991
NSN 6685-01-157-5482
NSN 5975-01-229-4503
NSN 4140-00-283-6843
NSN 5950-00-286-3301
NSN 6650-00-652-3553
NSN 5975-01-572-8086
NSN 6135-00-203-9645
NSN 6645-00-404-1785
NSN 5910-01-235-5398
NSN 6135-01-657-7116