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 6610-00-361-6954
NSN 6650-00-518-5194
NSN 6130-00-007-3787
NSN 5999-01-117-6466
NSN 6150-01-630-9304
NSN 5910-01-230-8255
NSN 5855-01-369-5037
NSN 6130-01-233-7885
NSN 5895-01-440-5398
NSN 6620-01-591-1761
NSN 5920-01-576-9327
NSN 6150-00-187-0527