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 5895-00-537-4231
NSN 4140-01-097-4340
NSN 5935-01-025-2840
NSN 6130-01-274-9312
NSN 5960-01-333-8428
NSN 6610-00-751-7916
NSN 6220-01-284-7558
NSN 2925-01-547-4565
NSN 5950-01-200-7893
NSN 2925-01-009-9560
NSN 5950-00-760-0700
NSN 5965-00-726-3168