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 6135-01-153-8027
NSN 5975-01-386-6570
NSN 6110-00-820-1660
NSN 6620-01-352-1854
NSN 5910-00-177-8291
NSN 5990-01-421-5342
NSN 6105-01-463-8557
NSN 5925-01-505-2768
NSN 5920-01-536-9253
NSN 6110-01-268-0418
NSN 5965-01-077-2124
NSN 5910-00-955-5709