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 6610-00-454-2532
NSN 6135-00-495-6862
NSN 5930-01-105-6692
NSN 2925-01-120-8712
NSN 5905-00-079-0800
NSN 5975-01-053-1331
NSN 6130-01-411-5410
NSN 5855-00-797-8217
NSN 5895-00-974-9586
NSN 5950-01-062-1437
NSN 5925-01-145-5330
NSN 6650-01-254-0491