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 5930-01-036-4601
NSN 5999-01-112-5834
NSN 5920-01-626-1606
NSN 6685-01-219-5889
NSN 4140-01-332-1134
NSN 6685-01-056-4379
NSN 6105-00-243-6839
NSN 7035-01-131-1168
NSN 5855-01-555-3354
NSN 5835-01-193-6192
NSN 4140-00-126-4685
NSN 6320-01-607-1491