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 5910-00-211-2074
NSN 6220-01-103-1104
NSN 6645-01-475-4723
NSN 5905-00-568-4371
NSN 6685-01-367-6620
NSN 6110-00-625-8643
NSN 2925-00-465-6354
NSN 7035-00-513-9764
NSN 7035-01-129-7834
NSN 5915-01-218-4038
NSN 5990-00-348-1423
NSN 6240-00-695-1032