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 5910-01-441-2851
NSN 5985-01-479-5078
NSN 5905-01-175-8135
NSN 5920-00-432-6684
NSN 6220-01-197-3938
NSN 6685-00-269-6348
NSN 6650-01-418-3228
NSN 5925-01-527-4750
NSN 6620-01-494-6055
NSN 5915-00-902-9264
NSN 7035-01-068-1096
NSN 5910-01-633-9963