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 5835-00-170-5238
NSN 5855-00-763-2155
NSN 5945-01-372-3519
NSN 5996-00-542-7081
NSN 5930-00-500-9023
NSN 5935-00-977-7877
NSN 5925-00-035-8469
NSN 5855-00-411-8688
NSN 5965-01-510-1178
NSN 5925-00-077-0406
NSN 4140-00-126-4685
NSN 5985-00-390-8837