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 2925-00-918-0859
NSN 6150-01-417-1370
NSN 6320-00-691-8514
NSN 5960-00-827-5094
NSN 5910-01-416-1917
NSN 5915-00-980-8072
NSN 6130-01-501-1537
NSN 5915-01-276-3800
NSN 2925-01-236-3547
NSN 5975-01-556-4026
NSN 5990-01-218-5160
NSN 6135-01-495-0933