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 5910-00-450-3891
NSN 6650-00-804-2039
NSN 5925-01-487-6830
NSN 5925-00-437-2854
NSN 7035-01-150-1917
NSN 5990-01-412-9020
NSN 6110-00-663-4054
NSN 5975-00-821-6666
NSN 5930-00-171-8867
NSN 5905-00-962-5753
NSN 5985-00-189-7138
NSN 5975-01-178-8655