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 5930-00-027-7898
NSN 5950-00-161-0635
NSN 6105-01-508-3471
NSN 5990-00-594-7291
NSN 6685-00-816-4816
NSN 6150-01-472-2033
NSN 5920-01-340-4506
NSN 5985-00-078-9631
NSN 5930-00-880-4811
NSN 5975-01-435-4604
NSN 5990-00-455-9865
NSN 6150-00-596-9882