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 6105-01-645-4935
NSN 6240-00-280-0186
NSN 6620-01-398-8986
NSN 6110-01-519-0258
NSN 6685-01-509-1384
NSN 6645-01-077-4934
NSN 5930-01-552-6326
NSN 5905-01-333-3239
NSN 6685-01-352-7241
NSN 5990-00-518-7525
NSN 6145-00-551-5288
NSN 6650-01-129-2886