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 6220-00-809-6071
NSN 6135-00-891-4944
NSN 6130-01-426-8841
NSN 2925-00-953-2920
NSN 6610-01-418-3284
NSN 5930-00-554-1064
NSN 4140-00-229-7059
NSN 5915-01-422-5494
NSN 5935-01-462-1725
NSN 6610-01-175-5920
NSN 6145-00-487-9575
NSN 5930-01-322-3956