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 5925-00-248-1453
NSN 5945-01-089-3612
NSN 6135-01-361-3886
NSN 5950-01-589-2148
NSN 6240-00-146-9322
NSN 7035-01-391-7470
NSN 5975-01-183-8797
NSN 6685-00-203-2389
NSN 4140-01-634-0330
NSN 7035-01-177-2807
NSN 5950-01-094-2517
NSN 2925-01-345-9439