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 7035-00-497-8784
NSN 5975-00-872-0765
NSN 6150-01-222-2806
NSN 5855-01-064-8961
NSN 6320-00-857-4073
NSN 5990-00-886-3685
NSN 5985-01-354-7569
NSN 2925-00-028-1481
NSN 5855-01-066-8742
NSN 6105-01-563-5086
NSN 6110-01-412-9334
NSN 5935-01-442-4079