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 2925-01-016-3111
NSN 5975-00-539-7300
NSN 6650-01-653-2556
NSN 6110-00-578-7243
NSN 5985-00-339-2318
NSN 5935-00-065-1107
NSN 5965-01-570-9070
NSN 5930-01-444-6144
NSN 6145-01-054-3874
NSN 6110-01-386-3093
NSN 5950-01-449-0943
NSN 5998-01-131-0045