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 5935-01-473-5557
NSN 6240-01-509-7416
NSN 6685-01-292-2607
NSN 5985-01-282-8921
NSN 6620-01-661-2700
NSN 6130-01-227-8270
NSN 5895-01-055-9625
NSN 5925-01-015-7873
NSN 6685-01-346-7677
NSN 6150-01-359-7345
NSN 2925-01-291-9997
NSN 6240-00-197-6819