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 6110-01-391-2710
NSN 5925-01-222-1261
NSN 5855-01-096-9294
NSN 5999-01-095-4517
NSN 5835-01-568-7796
NSN 5998-01-369-9777
NSN 5905-01-486-7774
NSN 5975-01-438-5375
NSN 5999-00-429-4779
NSN 6240-01-218-5187
NSN 6150-01-544-6114
NSN 6145-00-275-4046