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 5930-00-671-4697
NSN 6130-01-590-2392
NSN 6220-00-358-7347
NSN 5960-01-081-0400
NSN 5999-01-185-4224
NSN 6105-00-275-0826
NSN 6135-00-557-0174
NSN 6130-01-440-9295
NSN 6645-01-418-1657
NSN 6650-00-510-3786
NSN 5990-00-060-5873
NSN 5935-01-359-7589