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 6610-01-527-1599
NSN 6620-01-352-5640
NSN 6645-00-558-0028
NSN 5920-00-206-3595
NSN 5998-01-060-8961
NSN 5975-00-660-5962
NSN 5950-01-358-4316
NSN 4140-01-209-6625
NSN 6130-01-365-4270
NSN 5960-01-271-4820
NSN 4140-00-230-4252
NSN 2925-01-193-6689