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 5985-01-130-8044
NSN 5998-00-365-2001
NSN 4140-01-190-3280
NSN 5910-01-141-6667
NSN 5905-01-168-8603
NSN 6620-01-353-9224
NSN 6130-01-132-9274
NSN 6110-00-954-0718
NSN 6610-00-939-6510
NSN 6150-01-359-6624
NSN 2925-01-658-4470
NSN 5945-00-405-5006