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 5895-01-495-7750
NSN 5925-01-321-1880
NSN 5930-01-462-6800
NSN 6110-01-461-2631
NSN 5996-00-967-4943
NSN 6610-01-335-3185
NSN 6240-01-415-5149
NSN 5915-01-373-8252
NSN 5935-01-087-8836
NSN 5920-00-247-3830
NSN 5950-01-052-4269
NSN 5935-01-200-8304