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 6645-00-690-0423
NSN 5960-01-032-4229
NSN 6240-01-310-8778
NSN 5905-01-231-9626
NSN 2925-01-408-9362
NSN 5950-01-042-5911
NSN 5935-00-420-1188
NSN 5985-01-532-8453
NSN 6130-00-332-2913
NSN 5835-01-208-8800
NSN 6610-01-633-8931
NSN 5935-00-904-1086