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 6685-01-012-2854
NSN 5945-01-076-9447
NSN 5925-01-041-6342
NSN 6240-01-396-4779
NSN 6105-01-152-2513
NSN 2925-00-419-5868
NSN 7035-01-590-4013
NSN 6135-01-041-3829
NSN 2925-01-164-9579
NSN 5950-00-276-8584
NSN 6645-00-736-0476
NSN 5910-01-463-3473