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 6240-01-425-1939
NSN 2925-01-543-5571
NSN 7035-01-403-2841
NSN 6240-01-175-2046
NSN 6105-01-043-6180
NSN 5920-01-127-0252
NSN 5910-00-205-2430
NSN 5915-01-420-9537
NSN 5985-00-652-1631
NSN 6645-00-596-5388
NSN 6620-01-072-9372
NSN 5910-00-575-9618