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 5960-01-079-0660
NSN 5998-00-056-2871
NSN 5999-01-658-8134
NSN 5935-01-648-2673
NSN 6145-01-543-9282
NSN 6135-01-604-3956
NSN 5925-01-474-1358
NSN 6320-00-070-4544
NSN 5935-00-385-3635
NSN 5950-01-381-7562
NSN 5975-01-320-7440
NSN 5910-01-633-9963