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 5920-01-157-9471
NSN 5905-01-235-0317
NSN 5935-01-207-0637
NSN 5910-00-071-2592
NSN 6610-01-189-3001
NSN 5935-00-402-5679
NSN 6145-01-087-0350
NSN 5930-01-158-1058
NSN 6220-01-003-9126
NSN 6130-01-495-6320
NSN 6620-01-187-7267
NSN 6130-00-476-8410