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 5930-00-421-6308
NSN 5910-01-473-9181
NSN 5950-01-054-3508
NSN 6110-01-163-1228
NSN 4140-01-209-8456
NSN 5990-00-063-7236
NSN 5935-01-553-7313
NSN 6130-01-366-7995
NSN 6645-01-516-7046
NSN 5915-01-597-3926
NSN 6685-01-523-0090
NSN 5925-00-752-8292