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 6240-01-338-1773
NSN 6645-01-205-0252
NSN 6320-01-399-6177
NSN 5965-01-479-5620
NSN 6150-01-299-4814
NSN 5910-01-412-0709
NSN 6130-01-243-2154
NSN 5990-01-364-8405
NSN 6320-01-171-3238
NSN 6240-01-151-9341
NSN 5895-01-437-8871
NSN 4140-01-495-3768