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 6110-00-663-4054
NSN 5910-00-867-3501
NSN 5990-01-514-8708
NSN 6320-01-493-3530
NSN 4140-00-972-8804
NSN 5915-01-244-3616
NSN 5935-01-265-3401
NSN 5985-00-132-4214
NSN 5998-01-545-2698
NSN 5930-01-229-3586
NSN 5905-00-581-7996
NSN 5835-01-339-0542