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 5985-00-237-8499
NSN 5998-01-206-6931
NSN 6645-00-052-7288
NSN 2925-01-539-9795
NSN 6320-01-309-9595
NSN 7035-01-277-6677
NSN 5960-01-641-5493
NSN 6650-00-565-9266
NSN 5835-00-339-3020
NSN 5935-00-100-7204
NSN 6620-00-589-0071
NSN 5996-01-063-8822