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 5895-00-863-9809
NSN 2925-00-441-8252
NSN 6620-00-517-6209
NSN 6150-01-256-7270
NSN 5950-01-632-3060
NSN 5895-00-491-9506
NSN 6240-00-152-6289
NSN 5965-01-595-4737
NSN 6685-01-435-4072
NSN 6150-01-050-9362
NSN 6685-01-290-9381
NSN 5925-01-641-2879