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 6610-00-315-9315
NSN 5925-00-826-1628
NSN 6620-01-633-8443
NSN 5975-01-076-3656
NSN 5975-01-433-8836
NSN 6150-01-263-7914
NSN 5950-01-389-1212
NSN 5990-01-234-4607
NSN 5985-01-390-2466
NSN 6610-01-328-7824
NSN 5950-01-646-7192
NSN 6650-00-211-6302