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 5935-01-462-1341
NSN 6620-00-399-0087
NSN 6645-01-381-6084
NSN 5935-01-088-2950
NSN 6620-01-605-1465
NSN 6135-01-573-7164
NSN 5999-01-067-9057
NSN 5975-00-296-5040
NSN 6320-01-334-5305
NSN 4140-01-094-8778
NSN 5975-00-644-3183
NSN 5985-01-632-3963