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 5910-01-501-6192
NSN 2925-01-397-2495
NSN 5950-01-046-9339
NSN 5835-01-058-2631
NSN 6135-01-543-9363
NSN 6645-01-336-3647
NSN 6240-01-394-8592
NSN 6610-01-044-4740
NSN 5935-01-303-6111
NSN 5985-01-206-5827
NSN 5835-01-383-1313
NSN 5935-01-375-4939