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 5910-01-040-8961
NSN 6145-00-202-8570
NSN 2925-01-067-0123
NSN 5960-01-333-8428
NSN 5996-01-503-7237
NSN 6110-00-064-7005
NSN 6220-00-221-5899
NSN 5930-00-003-1631
NSN 5910-01-118-1393
NSN 6145-01-634-0388
NSN 6610-01-284-6968
NSN 6620-01-591-6681