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 6240-00-024-0217
NSN 6620-00-723-9552
NSN 5905-00-285-0803
NSN 6610-01-357-5957
NSN 5996-01-069-2915
NSN 7035-01-398-9581
NSN 6685-01-441-2616
NSN 6240-01-337-5728
NSN 5835-00-642-8148
NSN 6110-01-116-9440
NSN 6130-00-987-9503
NSN 6685-01-104-2427