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 5855-01-550-5219
NSN 6130-01-237-9837
NSN 5945-00-660-6550
NSN 5960-01-432-6038
NSN 5985-01-280-4630
NSN 7035-01-465-6835
NSN 5925-01-593-4367
NSN 5985-01-181-7346
NSN 5950-01-012-1906
NSN 5835-01-229-6964
NSN 6220-00-056-8827
NSN 2925-01-480-3351