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 6320-01-103-6218
NSN 5935-01-319-8674
NSN 7035-01-339-5480
NSN 5975-00-453-3263
NSN 5905-00-302-9414
NSN 5915-00-249-1641
NSN 6145-00-318-9206
NSN 5905-00-976-1352
NSN 6620-00-527-9280
NSN 5975-01-158-6150
NSN 6320-01-052-2118
NSN 5960-00-273-3058