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 4140-01-622-6837
NSN 6220-00-476-9649
NSN 6620-00-145-8232
NSN 6105-01-594-2251
NSN 5910-01-442-1196
NSN 5999-01-513-9607
NSN 5925-01-465-4520
NSN 5895-01-324-0374
NSN 6105-01-566-1135
NSN 5950-00-163-6551
NSN 5999-00-211-0131
NSN 5905-00-613-4481