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 6150-01-503-1585
NSN 5999-01-479-8614
NSN 6645-00-908-0140
NSN 6645-01-132-1862
NSN 2925-00-440-1855
NSN 6220-01-339-6342
NSN 6150-01-015-6262
NSN 5990-01-633-9503
NSN 5930-01-536-4803
NSN 4140-01-599-5142
NSN 5990-01-473-4314
NSN 5930-00-105-4631