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 5990-00-269-2226
NSN 5999-01-146-7733
NSN 5935-01-590-7882
NSN 6240-01-324-4688
NSN 6110-01-195-9280
NSN 5975-01-401-5355
NSN 6220-01-495-7661
NSN 2925-01-384-4139
NSN 6645-01-442-6476
NSN 5965-01-604-6812
NSN 6150-00-276-1924
NSN 6685-00-622-5417