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 5905-00-412-6605
NSN 5895-01-553-0838
NSN 5935-00-628-3928
NSN 5975-01-415-2357
NSN 5975-01-417-6799
NSN 6135-01-319-5567
NSN 5996-01-406-5785
NSN 5996-01-411-7705
NSN 5905-01-285-2741
NSN 5990-01-561-7802
NSN 6135-00-369-2368
NSN 5910-01-190-7172