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 6145-00-990-3003
NSN 5925-01-411-6028
NSN 6645-00-114-2678
NSN 6220-00-628-1410
NSN 5895-01-528-6831
NSN 5930-01-437-6544
NSN 5990-00-116-6590
NSN 5985-01-022-2897
NSN 5910-01-267-9919
NSN 5915-01-308-3998
NSN 5965-00-424-9636
NSN 5935-00-416-7110