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 6130-01-277-5422
NSN 5990-01-242-9653
NSN 5945-01-081-5478
NSN 5895-01-029-3791
NSN 6685-01-017-1419
NSN 5935-01-411-5982
NSN 5950-00-753-7577
NSN 5985-00-692-1550
NSN 5835-01-452-7081
NSN 5945-01-361-7687
NSN 5925-01-607-6279
NSN 4140-00-816-7049