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 6135-01-582-2131
NSN 6110-01-536-7820
NSN 4140-00-193-8879
NSN 7035-01-588-6557
NSN 5925-01-344-4901
NSN 5930-01-309-4365
NSN 6110-01-237-2548
NSN 6610-00-938-6567
NSN 5855-01-312-5160
NSN 5895-01-487-3123
NSN 5920-01-030-1112
NSN 5855-00-918-1622