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 2925-01-310-3232
NSN 6220-01-417-8067
NSN 6135-01-247-5660
NSN 6150-01-372-8678
NSN 6620-01-195-3355
NSN 7035-01-248-7265
NSN 6130-00-245-4302
NSN 5996-00-466-9781
NSN 6620-01-470-9067
NSN 5999-01-060-0020
NSN 5996-01-598-0112
NSN 6150-01-585-2605