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 6610-01-633-8931
NSN 6645-00-176-0223
NSN 5935-01-266-3123
NSN 2925-00-986-2055
NSN 6110-00-129-0035
NSN 6135-00-919-1117
NSN 6610-00-961-7263
NSN 5930-01-452-9950
NSN 6110-01-029-9619
NSN 5950-01-523-4893
NSN 5925-01-305-6194
NSN 6130-01-307-7344