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 5910-01-263-0625
NSN 5930-01-328-6283
NSN 6130-00-759-2882
NSN 5925-01-323-4173
NSN 6105-01-630-5996
NSN 5835-01-089-1076
NSN 5975-01-415-0918
NSN 5945-00-362-7192
NSN 6620-00-251-0569
NSN 6685-00-207-4214
NSN 6130-00-265-1765
NSN 5990-00-832-9766