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 6145-01-254-2935
NSN 5935-01-659-6128
NSN 6135-01-307-2749
NSN 5990-01-452-0911
NSN 6320-01-446-8050
NSN 5895-00-873-6875
NSN 6650-01-164-0191
NSN 7035-00-946-2642
NSN 6645-00-736-0476
NSN 5835-00-830-6416
NSN 5999-01-382-9269
NSN 6620-00-500-0041