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 2925-01-437-9041
NSN 6320-01-233-5798
NSN 5985-01-228-4537
NSN 5930-01-631-1420
NSN 5935-00-720-8018
NSN 5990-01-052-9343
NSN 5999-00-135-9868
NSN 5910-00-557-3495
NSN 6610-01-083-1446
NSN 5930-01-214-6001
NSN 7035-01-106-3476
NSN 6110-00-144-3159