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 6150-00-185-3293
NSN 6145-01-146-4106
NSN 5905-01-646-9439
NSN 5855-00-688-9954
NSN 5960-01-003-8480
NSN 5920-01-013-8594
NSN 5925-01-216-0287
NSN 2925-01-474-3363
NSN 2925-01-643-8395
NSN 5935-01-526-6666
NSN 5855-01-525-9626
NSN 6320-01-143-3597