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 6645-00-079-1430
NSN 6105-01-158-1717
NSN 5985-01-460-2761
NSN 5965-00-021-5620
NSN 5950-00-240-6962
NSN 6320-01-139-0533
NSN 6145-01-600-1688
NSN 5925-01-387-8143
NSN 2925-01-490-3884
NSN 5998-01-403-2586
NSN 5935-01-535-6840
NSN 5999-00-492-8926