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 5965-01-620-4741
NSN 2925-00-026-0005
NSN 5855-00-933-8286
NSN 5999-01-166-0255
NSN 5975-00-785-9288
NSN 5990-01-649-4647
NSN 6110-01-461-5116
NSN 5930-00-405-6668
NSN 5930-01-533-9822
NSN 5910-00-398-0930
NSN 6150-01-331-5686
NSN 7035-01-027-1718